PS:1 Wiki Dev - User contributions [en]

Boyer Schultz 6-12 Surface Grinder

2021-08-13T14:54:16Z

Dmilligan:

<includeonly>[[Category:Equipment]]
{{#ifeq: {{{where|}}} | Removed | [[Category:Removed Equipment]] {{mbox |type=notice |text=This tool is no longer at the space. [[Equipment|Back to list of Equipment]]}} |

{{#if: {{{image|}}} | | [[Category:Photographs_Needed]] }}
{{#switch: {{{doesitwork|}}} | yes | "yes" | Yes | "Yes" | YES | "YES" | y | "y" | Y | "Y" = | [[Category:Broken Equipment]] {{mbox |type=notice |text=This tool is currently broken, please contact the area host for more information. }} }}
{{#if: {{{hostarea|}}} | [[Category:{{{hostarea}}}]] | [[Category:EquipmentPageErrorNoAreahost]] }}

}}
</includeonly>

{{Infobox Equipment
| image = BoyerSchultz.JPG
| owner = PS1
| serial = {{{serial}}}
| model = 6-12
| arrived = May 2018
| doesitwork = yes
| contact = Host Cold Metals
| where = {{{where}}}
| authorization = yes
| hackable = no
| value = $400
| hostarea=Cold Metals
}}

{{Template:EquipmentLabel
| owner = PS1
| authorization = yes
| hackable = no
}}

{{#subobject:
|Has value={{{value|}}}
}}

= Specifications =
The machine is wired for 220 volt, 3 phase, 60 cycle operation.
{|class="wikitable"
|+ Wheel
! Wheel diameter
| 7"
|-
! Wheel thickness range
| 3/16" to 1/2"
|-
! Wheel hole diameter
| 1 1/4"
|-
! Spindle speed
| 3000 RPM
|}

{|class="wikitable"
|+ Travel
! Axis
! Length
! Handwheel increment
|-
! Longitudinal feed
| 13"
| non-graduated
|-
! Cross feed
| 7"
| 0.001"
|-
! Vertical feed
| 11 1/2"
| 0.0005" (0.0001" vernier)
|}

= Major Components =

<gallery>
File:Boyer-schultz-main-power-switch.jpg|The main power switch; the "manual" setting powers only the spindle motor while the "auto" setting powers the spindle and the dust collector
File:Boyer-schultz-dust-collector.jpg|The dust collector on the left side of the table
File:Boyer-schultz-wheel-and-cover.jpg|The wheel and wheel housing (orange) on the end of the spindle; note the arrow indicating the clockwise rotation
File:Boyer-schultz-wheel-spanner-rack.jpg|The wheel spanner rack and wheel spanner, on the right side of the machine
File:Boyer-schultz-vertical-wheel.jpg|The handwheel for feeding the spindle vertically, at the top of the machine; note also the spindle way oil cup
File:Boyer-schultz-longitudinal-wheel.jpg|The longitudinal feed handwheel, on the left side of the machine's front
File:Boyer-schultz-longitudunal-stops.jpg|The longitudinal stops (left, right) and stop engagement plunger (center) on the front of the machine
File:Boyer-schultz-cross-feed-wheel.jpg|The cross feed handwheel on the front of the machine
File:Boyer-schultz-cross-feed-lock.jpg|The cross feed lock knob (black circle, center) on the right side of the machine, under the table
File:Boyer-schultz-magnetic-chuck.jpg|The magnetic chuck mounted on the machine's table; note the engagement lever, pictured in the 'off' position
</gallery>

= Tools =
Adaptor - https://www.mcmaster.com/#43745a21/=1d6or75
Puller - https://www.mcmaster.com/#43745a51/=1d6osq6

= Auth/use notes =

== Safety ==

=== Wheel inspection ===

[[File:Surface-grinder-wheel-inspection.jpg|thumb|right|Tap a wheel with the end of a screwdriver to test its ring]]

<blockquote>When a grinding wheel is received in the shop or removed from storage, it should be inspected closely for damage or cracks. Check a small wheel by suspending it on one finger or with a piece of string. Tap it gently with a light '''nonmetallic''' instrument, such as the handle of a screwdriver. If the wheel does not give a clear ring, discard it.</blockquote>

<blockquote>All wheels do not emit the same tone; a low tone does not necessarily mean a cracked wheel. Wheels are often filled with various resins or greases to modify their cutting action, and resin or grease deadens the tone. Vitrified and silicate wheels emit a clear metallic ring. Resin, rubber, and shellac bonded wheels emit a tone that is less clear. Regardless of the bond, the sound of a cracked wheel is easy to identify.</blockquote>

==== Procedure for wheel inspection ====
# Suspend the wheel on a pin or a shaft that fits through the hole so that it will be easy to turn, but do not mouth the wheel on the grinder. If the wheel is too large to suspend, stand it on a clean, hard surface.
# Imagine a vertical plumb line up the center of the wheel.
# Tap the wheel about 45 degrees on each side of the vertical line, about one or two inches from the wheel’s edge. (Large wheels may tapped on the edge rather than the side of the wheel.)
# Turn the wheel 180 degrees so that the bottom of the wheel is now on top.
# Tap the wheel about 45 degrees on each side of the vertical line again.
# The wheel passes the test if it gives a clear metallic tone when tapped at all four points. If the wheel sounds dead at any of the four points, it is cracked. Do not use it.

=== Operation ===
* The magnetic chuck should never be turned off when the wheel is spinning: if, for some reason, the wheel comes in contact with a part when the chuck is off, it could kick it out, possibly hitting something or someone (at best), or causing a wheel explosion
* The spindle should never be turned on unless the wheel cover is fitted into place: if the wheel explodes when the cover is not fitted, nothing will protect you from the fragments
* It is recommended that the X-axis stops are located such that they will stop the table before its horizontal travel is exceeded, and that the stop plunger is enabled when grinding
** If the table exceeds its horizontal travel, it will hop off its ways, which can potentially cause a wheel crash

=== Work holding ===
* Preparation
** Stone parts & workholding fixtures (e.g. the magnetic chuck, a grinding vice) every time the setup is changed (e.g. when a part is removed from the magnetic chuck for measuring)
** Wipe mating surfaces (e.g. part face, magnetic chuck face) down to remove grit before clamping
** Lap or sand rough (unground) faces before holding them on the magnetic chuck
*** Magnetic holding force is a function of the surface finish of the mating faces (part face & magnetic chuck face)
* Geometry
** Thin parts
*** The field lines loop back about a quarter of an inch above the magnetic chuck face, so care should be taken that parts thinner than that are held securely: make sure they can't be shifted on the mag chuck before grinding
** Tall parts
*** Work holding force is proportional to the contact area
*** Tall parts act as a long lever when the grinding forces (tangential to the wheel, parallel to the grinder travel) act on the top
*** Tall parts are prone to tipping over
**** They can be blocked in with shorter, wider pieces, but a safer route is to clamp them securely to something that isn't at risk of falling over: either in a grinding vice or to a large square
** Everything on the magnetic chuck face should be oriented so that if it does tip over, the part is moved '''away''' from the grinding wheel, not into it; otherwise, it will likely result in a catastrophic crash (a wheel explosion) if the part tipswhile grinding
* Material
** Only ferromagnetic materials can be held directly on the magnetic chuck
** Parts made of any other material need to be held using additional workholding fixtures (e.g. a grinding vice) which are themselves held by the magnetic chuck

=== Health ===
* Dust / grit collection should always be turned on, because you do not want to breathe it
* The operator should never put their hand (or any other body part) anywhere near the wheel when it's spinning
** Even if the wheel is backed off from the magnetic chuck, the wheel should be turned off before parts are picked up off of the magnetic chuck, in case one of the hand-feed wheels is bumped, potentially causing the table to knock a body part into the spinning wheel

== Grinding wheels ==

* Arbors
** Removing wheel from arbor
** Mounting on adapter
** Balancing

=== Wheel types ===

[[File:Surface-grinding-wheel-markings.jpg|thumb|right|Wheel type markings]]

<blockquote>Every grinding wheel is marked by the manufacturer with a stencil or a small tag. The manufacturers have worked out a standard system of markings.</blockquote>

=== Wheel Shape ===

[[File:Surface-grinder-heel-shapes.jpg|thumb|right|Wheel shapes]]

{|class="wikitable"
! Shape
! Type nos.
! Description
|-
! Straight
| 1, 5, 7
| Straight wheels are commonly applied to internal, cylindrical, horizontal spindle, surface, tool, and offhand grinding and snagging. The recesses in type numbers 5 and 7 accommodate mounting flanges. Type number 1 wheels from 0.006" to 1/8" thick are used for cutting off stock and slotting.
|-
! Cylinder
| 2
| Cylinder wheels may be arranged for grinding on either the periphery or side of the wheel.
|-
! Tapered
| 4
| Tapered wheels take tapered safety flanges to keep pieces from flying if the wheel is broken while snagging.
|-
! Straight cup
| 6
| The straight cup wheel is used primarily for surface grinding, but can also be used for offhand grinding of flat surfaces. Plain or beveled faces are available.
|-
! Flaring
| 11
| The flaring cup wheel is commonly used for tool grinding. With a resinoid bond, it is useful for snagging. Its face may be plain or beveled.
|-
! Dish
| 12
| The chief use of the dish wheel is in tool work. Its thin edge can be inserted into narrow places, and it is convenient for grinding the faces of form-relieved milling cutters and broaches.
|-
! Saucer
| 13
| The saucer wheel is also known as a saw gummer because it is used for sharpening saws.
|}

=== Grain size/grit ===

{|class="wikitable floatright"
! Grit class
! Coarser
! <-
! --
! --
! --
! ->
! Finer
|-
! Coarse
| 8
| 10
| 12
| 14
| 18
| 20
| 24
|-
! Medium
| 30
| 36
|
| 46
|
| 54
| 60
|-
! Fine
| 80
| 100
| 120
|
| 150
|
| 180
|}

<blockquote>Abrasive grains are selected according to the mesh of a sieve through which they are sorted. For example, grain number 40 indicates that the abrasive grain passes through a sieve having approximately 40 meshes to the linear inch. A grinding wheel is designated coarse, medium, or fine according to the size of the individual abrasive grains making up the wheel. The softer and more ductile the material, the coarser the grain size. The larger the amount of stock to be removed, the coarser the grain size. The finer the finish desired, the finer the grain size.</blockquote>

=== Hardness grade ===

<blockquote>The grade of a grinding wheel designates the hardness of the bonded material. A soft wheel is one on which the cutting particles break away rapidly while a hard wheel is one on which the bond successfully opposes this breaking away of the abrasive grain.</blockquote>

{|class="wikitable floatright"
! Grade class
! Softer
! <-
! --
! --
! ->
! Harder
|-
! Soft
| B
| D
| E
| F
| G
| H
|-
! Medium
| I
| J
| K
| L
| M
| N
|-
! Hard
| O
| P
| Q
| R
| S
| T
|}

<blockquote>Most wheels are graded according to hardness by a letter system. Most manufacturers of grinding abrasive wheels use a letter code ranging from A (very soft) to Z (very hard). Vitrified and silicate bonds usually range from very soft to very hard, shellac and resinoid bonds usually range from very soft to hard, and rubber bonds are limited to the medium to hard range.</blockquote>

<blockquote>The grade of hardness should be selected as carefully as the grain size. A grinding abrasive wheel that is too soft will wear away too rapidly, the abrasive grain will be discarded from the wheel before its useful life is realized. On the other hand, if the wheel is too hard for the job, the abrasive particles will become dull because the bond will not release the abrasive grain, and the wheel’s efficiency will be impaired.</blockquote>

<blockquote>The harder the material, the softer the wheel. The smaller the arc of contact, the harder the grade should be. The arc of contact is the arc, measured along the periphery of the wheel, that is in contact with the work at any instance. It follows that the larger the grinding wheel, the greater the arc of contact and, therefore, a softer wheel can be used. The higher the work speed with relation to the wheel speed, the milder the grinding action and the harder the grade should be.</blockquote>

=== Bonding material ===

<blockquote>The abrasive particles in a grinding wheel are held in place by the bonding agent. The percentage of bond in the wheel determines, to a great extent, the 'hardness' or 'grade' of the wheel. The greater the percentage and strength of the bond, the harder the grinding wheel will be. “Hard” wheels retain the cutting grains longer, while “soft” wheels release the grains quickly. If a grinding wheel is 'too hard' for the job, it will glaze because the bond prevents dulled abrasive particles from being released so new grains can be exposed for cutting. Besides controlling hardness and holding the abrasive, the bond also provides the proper safety factor at running speed. It holds the wheel together while centrifugal force is trying to tear it apart. The most common bonds used in grinding wheels are vitrified, silicate, shellac, resinoid, and rubber.</blockquote>

{|class="wikitable"
! Bond type
! Symbol
! Description
|-
! Vitrified
| V
| The majority of grinding wheels have a vitrified bond. Vitrified bonded wheels are unaffected by heat or cold and are made in a greater range of hardness than any other bond. They adapt to practically all types of grinding with one notable exception: if the wheel is not thick enough, it does not withstand side pressure as in the case of thin cutoff wheels.
|-
! Silicate
| S
| Silicate bond releases the abrasive grains more readily than vitrified bond. Silicate bonded wheels are well suited for grinding where heat must be kept to a minimum, such as grinding edged cutting tools. It is not suited for heavy-duty grinding. Thin cutoff wheels are sometimes made with a shellac bond because it provides fast cool cutting.
|-
! Resin
| B
| Resinoid bond is strong and flexible. It is widely used in snagging wheels (for grinding irregularities from rough castings), which operate at 9,500 SFPM. It is also used in cutoff wheels.
|-
! Rubber
| R
| In rubber-bonded wheels, pure rubber is mixed with sulfur. It is extremely flexible at operating speeds and permits the manufacture of grinding wheels as thin as 0.006 inch for slitting nibs. Most abrasive cutoff machine wheels have a rubber bond.
|}

=== Abrasive structure ===

[[File:Surface-grinding-wheel-structure.jpg|thumb|right|Wheel structure]]

<blockquote>Bond strength of a grinding wheel is not wholly dependent upon the grade of hardness but depends equally on the structure of the wheel, that is, the spacing of the grain or its density. The structure or spacing is measured in number of grains per cubic inch of wheel volume. The softer, tougher, and more ductile the material, the wider the grain spacing. The finer the finish desired, the closer, or more dense, the grain spacing should be.</blockquote>

=== Abrasive material ===

{|class="wikitable floatright"
|+ Appropriate abrasives per work material
! Silicon carbide
! Aluminum oxide
|-
|
* Gray and chilled iron
* Brass and soft bronze
* Aluminum and copper
* Marble and other stone
* Rubber and leather
* Very hard alloys
* Cemented carbides
* Unannealed malleable iron
|
* Carbon steels
* Alloy steels
* High speed steels
* Annealed malleable iron
* Wrought iron
* Hard bronzes
|}

<blockquote>Most grinding wheels are made of silicon carbide or aluminum oxide, both of which are artificial (manufactured) abrasives. Silicon carbide is extremely hard but brittle. Aluminum oxide is slightly softer but is tougher than silicon carbide. It dulls more quickly, but it does not fracture easily therefore it is better suited for grinding materials of relatively high tensile strength. The tensile strength of material to be ground is the main factor in the selection of the abrasive to be used.</blockquote>

{|class="wikitable"
|+ Abrasive material subtypes
! Type / Composition
! Symbol
! Usage
|-
! Dark Aluminum Oxide
| A
| Most common grain. Used for Heavy Duty General Purpose
|-
! 20% Ceramic Aluminum Oxide,
30% Pink Grain,
50% White Grain
| AS3
| Excellent for form and corner holding.
|-
! Blue Aluminum Oxide
| AZ
| Grinds fast with excellent cool cutting action and requires minimal dressing.
|-
! Red Aluminum Oxide (Ruby)
| RA
| Harder grain and sharper than PA & AZ wheels good for steels with high level chromium
|-
! Pink Aluminum Oxide
| PA
| General Purpose Grain that is tough but friable. Tool Room sharpening applications.
|-
! White Aluminum Oxide
| WA
| Highly friable grain for fast cool cutting. Good for light grinding on all steels particularly on tool and die steels.
|-
! Green Silicon Carbide
| GC
| Very friable use for carbide grinding applications.
|}

== Wheel selection ==

# First consider the material to be ground and its hardness. These affect the choice of abrasive and grade or hardness of the wheel.
#* Aluminum oxide are best for steels, while silicon carbide abrasives are better suited to grinding cast iron, nonferrous metals and nonmetallic materials.
#* The hardness of the material to be ground also affects choice of the wheel grade or hardness. A harder grade can more easily be used on soft, easily penetrated materials than on hard materials which naturally tend to dull the wheel faster. The softer grades release the dull grains more readily to present new, sharp grains to the work.
# Second factor, in selecting a wheel in the amount of stock to be removed and the finish required. These affect the choice of grit size and bond as follows:
#* A relatively coarse grit size is selected for rapid stock removal without regard for finish as rough grinding; a fine grit should be used where a high finish is desired.
#* Vitrified bonded wheels are generally used where a commercial finish satisfactory. The organic bonds, resinoid, rubber and shellac, produce the highest finish.
# The area of grinding contact between the wheel and the work affects the choice of grit size and grade.
#* A coarse grit is required when the contact area is relatively large, as in surface grinding with cup wheels, cylinders or segments, to provide adequate chip clearance between the abrasive grains. As area of contact becomes smaller and the unit pressure tending to break down the wheel face becomes greater, finer grit wheels should be used.
#* As to the grade or hardness, on large area of contact a soft grade will provide normal breakdown of the wheel, insuring continuous, free-cutting action. A harder grade, on the other hand, is needed to stand up under the increasingly higher unit pressure as the area of contact becomes smaller.
# The severity of the grinding operation affects the choice of abrasive and grade.
#* A tough abrasive like 4A Aluminum Oxide should be used for rough, heavy duty grinding of steel.
#* The milder abrasives like 32 and 38 Aluminum Oxide are best for lighter precision grinding operations on steels and semisteels, while the intermediate 57 and 19 Aluminum Oxide abrasives are used for precision and semiprecision grinding of both mild and hard steels.
#* The severity of the grinding operation also influences the choice of grade. Hard grade provide durable wheels for rough grinding operations such as snagging, while medium and softer grade wheels can be used for precision type operations which are less severe on the wheel.
# The speed at which the grinding wheel is to be operated often dictates the type of bond.
#* Vitrified bonded wheels should not be used at speeds over 6,500 s.f.p.m. With few exceptions, when the speed exceeds this figure, resinoid, rubber or shellac bonded wheels should be used. Note, the safe operating speed shown on the tag, wheel or blotter must never be exceeded.
# Feed rate
#* The higher the feed rate, the greater the grinding pressure is. If the grinding speed of workpiece must be increased, the feed rate will be increased, then the wear of the wheel will be faster. Therefore a harder grinding wheel is required.

== Wheel dressing ==

[[File:Surface-grinder-wheel-dressing.png|thumb|right|The dresser should be angled backwards, in the direction of the wheel, and slightly left-of-center]]

<blockquote>
Grinding wheels wear unevenly under most general grinding operations due to uneven pressure applied to the face of the wheel when it cuts. Also, when the proper wheel has not been used for certain operations, the wheel may become charged with metal particles, or the abrasive grain may become dull before it is broken loose from the wheel bond. In these cases, it is necessary that the wheel be dressed or trued to restore its efficiency and accuracy. 'Dressing' is cutting the face of a grinding wheel to restore its original cutting qualities. 'Truing' is restoring the wheel's concentricity or reforming its cutting face to a desired shape. Both operations are performed with a tool called a 'diamond dresser'. The diamond dresser is the most efficient for truing wheels for precision grinding, where accuracy and high finish are required. A dresser may have a single diamond or multiple diamonds mounted in the end of a round steel shank. Inspect the diamond point frequently for wear. It is the only usable part of the diamond, and is worn away it cannot dress the wheel properly.
</blockquote>

<blockquote>
The whole dressing operation should simulate the grinding operation as much as possible. The grinding wheel usually wears more on the edges, leaving a high spot towards the center. When starting the dressing or truing operation, be certain that the point of the dressing tool touches the highest spot of the wheel first, to prevent the point from digging in. Feed the dresser tool point progressively, 0.001 inch at a time, into the wheel until the sound indicates that the wheel is perfectly true. The rate at which you move the point across the face of the wheel depends upon the grain and the grade of the wheel and the desired finish. A slow feed gives the wheel a fine finish, but if the feed is too slow, the wheel may glaze. A fast feed makes the wheel free cutting, but if the feed is too fast, the dresser will leave tool marks on the wheel. The correct feed can only be found by trial, but a uniform rate of feed should be maintained during any one pass.
</blockquote>

= References =

== Publications ==

* [[:File:Boyer Schultz.pdf|Boyer Schultz 6-12 manual]]
* [[:File:Grinder-operation-tc-9-524.pdf|US Army training information on grinder use; see specifically pp. 5-5 to 5-12]]
* [https://openoregon.pressbooks.pub/manufacturingprocesses45/chapter/chapter-5-surface-grinder/ "Manufacturing Processes 4-5" by LamNgeun Virasak, chapter 5: "Surface Grinder"]

== Videos ==

* [https://www.youtube.com/watch?v=MofRhM_W-Vk Grinding Wheel fundamentals]
* [https://www.youtube.com/watch?v=gjz0Zt76GJ4 Grinding Wheel and finish]
* [https://www.youtube.com/watch?v=7FwL55ErfDI Basic Surface Grinding]
* [https://www.youtube.com/watch?v=iMHksf17oqE Grinding a square]
* [https://www.youtube.com/watch?v=CsTbWAu0k-o Grinding Flat]
* [https://www.youtube.com/watch?v=jtB_jtH__F0 Background info]

= Authorization =

Contact one of these people to get authorized:

{| class="wikitable"
|+ Authorized Authorizers
|-
| [[User:mct|McTavish McArdle]]
|}

== List of Currently Authorized Users ==
{| class="wikitable"
|+ Danger Committee
|-
| [[User:Jim|Jim Brink]]
|-
| [[User:mct|McTavish McArdle]]
|}

{| class="wikitable"
! Authorized Member
! Authorized By
! Authorized On
|-
| Andrew Wingate
| n/a (adviser to danger committee)
|
|-
| [[User:Jim|Jim Brink]]
| n/a (on danger committee)
|
|-
| [[User:mct|McTavish McArdle]]
| n/a (on danger committee)
|
|-
| [[User:Nerobro|Greg "Nerobro" Teiber]]
| [[User:mct|McTavish McArdle]]
| 8/17/18
|-
| [[User:Nerobro|Luis Colmenares]]
| [[User:mct|McTavish McArdle]]
| 8/17/18
|-
| [[User:Nerobro|Daniel Martinez Olivas]]
| [[User:mct|McTavish McArdle]]
| 8/17/18
|-
|[[User:ciacullo2|Chris Iacullo]]
| [[User:mct|McTavish McArdle]]
| 10/03/18
|-
|[[User:CrazyUncleDave|Dave Solomon]]
| [[User:mct|McTavish McArdle]]
| 12/06/18
|-
|[[User:drbonsai|Alex Zhu]]
| [[User:mct|McTavish McArdle]]
| 12/06/18
|-
|[[User:rchace|Raymond Chace]]
| [[User:mct|McTavish McArdle]]
| 11/12/19
|-
|David Milligan
|[[User:mct|McTavish McArdle]]
|-
|}

[[Category:Shop Equipment]]
[[Category:Equipment]]
[[Category: Cold Metals]]

Bridgeport Knee Mill

2021-08-13T14:48:46Z

Dmilligan:

{{Template:EquipmentPage
|image = bridgeportMill2.jpg
|owner=PS:One
|model=Bridgeport Series I knee mill
|arrived=Dec 2013
|doesitwork=yes
|contact=Area Host
|where=Cold Metals
|certification=yes
|hackable=no
|value=~$3000}}

== Description ==
A recent model Knee Mill made by the Bridgeport company. This is the gold-standard small shop manual milling machine in the US. Most other mills of the same size are direct copies of the bridgeport design. This particular machine is a Series I, J-head with a mechanical variable speed drive. The machine has a power quill feed built into the head, in addition to the additional equipment listed below. This machine is capable of facing, surfacing, drilling and slotting in materials ranging from plastics to mild steel. Harder metals may be cut if special cutters and coolant are available. This machine is not equipped with CNC controls, consequently curved paths are limited to circular arcs. These can be cut on pieces that can be mounted on the 8" rotary table or approximated to a desired precision using the simple or smooth arc functions of the DRO.
== Authorization ==
=== This tool requires authorization for use ===

Authorization on this tool requires previous [[Tier 1 Cold Metals Authorization]]. Seek out the volunteer authorizers on the Groups or in person.

The Bridgeport authorization is in two parts: once you have the prerequisite authorization, you need to complete the [https://canvas.pumpingstationone.org/courses/70 Canvas course]; then, contact an authorizer to schedule the in-person portion of the authorization, where you will complete the auth project.

=== Authorizers ===
* [[User:mct|McTavish McArdle]]
** email: mctavishmcardle [at] gmail [dot] com
** slack handle: @mct
*Wally Fugiel
** email:
** slack handle:

== Personal Tooling and Learning Resources ==
=== Equipment ===
{| class="wikitable" border="1"
! Item
! Description
! Supplier
! Cost
|-
|End Mills
|A set of sharp cutters you don't have to share
|can be purchased from McMaster, Enco or Shars
|~$50 and up
|-
|Caliper
|Measurement device accurate to approximately .001". A 6" digital Mitutoyo would be a fine choice for about $100. Beware of counterfeits.
|Amazon, or any industrial supplier
|$30 and up
|-
|Tool Holder
|Something to bring your tools with you and keep them safe.
|A member made example can be found [http://www.thingiverse.com/thing:1982845 here]
|Free/3D printed
|}

=== Purchasing Cutters ===
* [https://www.mcmaster.com/#end-mills/ McMaster Carr]
* [https://www.maritool.com/Cutting-Tools/c78/index.html Maritool]
* [http://www.onsrud.com/product/Item/m/search.html?q=isFeaturedProduct Onsrud]

=== Learning ===
* Tubal Cain Bridgeport mill parts, [https://www.youtube.com/watch?v=YbpESuNQL14 part A] and [https://www.youtube.com/watch?v=7oB7B_eJi6A part B].
* MIT milling machine videos: [http://techtv.mit.edu/collections/ehs-videos/videos/127-machine-shop-4 Machine Shop 4], [http://techtv.mit.edu/collections/ehs-videos/videos/84-machine-shop-5 Machine Shop 5], [http://techtv.mit.edu/collections/ehs-videos/videos/143-machine-shop-6 Machine Shop 6], and [http://techtv.mit.edu/collections/ehs-videos/videos/183-machine-shop-7 Machine Shop 7].
* [http://www.amazon.com/Machine-Shop-Practice-Karl-Moltrecht/dp/0831111321/ref=sr_1_2?ie=UTF8&qid=1390441210&sr=8-2&keywords=machine+shop+practice Machine Shop Practice, Volume 2]. This book is available in the lounge library and in the cabinet next to the mill.
* [http://www.amazon.com/Machinerys-Handbook-29th-Erik-Oberg/dp/083112900X/ref=sr_1_1?ie=UTF8&qid=1390441411&sr=8-1&keywords=machinery%27s+handbook Machinery's Handbook]. Three copies of this are available in the cabinet next to the mill.
* [http://www.freeinfosociety.com/media/pdf/4474.pdf Milling Machine Operations]. This is published by the United States Army, and is therefore in the public domain and freely available online.

=== Feeds and Speeds ===
A page with feed and speed information to get you started may be found at [[Bridgeport Knee Mill Feeds and Speeds]].

== Available Equipment ==
[[File:large-mill-accessories-cabinet.jpg|thumb|right|The Large Mill Accessories Cabinet]]
[[File:small-mill-tooling-chest.jpg|thumb|right|The Small Mill Tooling Chest]]

=== On the mill ===
* Power feed Model 6F (x axis)
* Digital Read Out (DRO)
* Kurt 6" vise
* Riser plate
* Common R8 collets (tool holding)

=== In the Large Mill Accessories Cabinet ===
* Hold down set
* Palmgren 8" Rotary Table
* Tilting table
* Spindle square
* [[Bridgeport Horizontal Attachment|Horizontal Attachment]]
* [[Bridgeport Knee Power Feed|Knee power feed]]

=== In the Small Mill Tooling Chest ===
* Boring heads
* Fly cutters
* Two flute end mills
* Tapping heads
* More R8 collets (tool holding) and 5C collets (work holding)

=== Elsewhere ===
* Sine plate

== Repair and Maintenance ==
Please see the [https://wiki.pumpingstationone.org/File:Bridgeport_Manual_2407_001.pdf service manual].

=== Resetting the machine and work area after use ===
* Clean up chips
* Turn off DRO, power feed and light

=== Maintenance ===
[[Bridgeport_Knee_Mill_maintenance|bridgeport maintenance page]]

=== Repairs ===
The X-axis handle (opposite the power feed) is missing the spring.

The handle for the Z-axis front lock has snapped off. The rabbit hole is [http://www.icai-online.com/knee-lock-shaft-assembly.html deeper than expected], or may just be a handle that can be removed.

The screw to prevent collets from rotating in the spindle is frequently removed, as some collets won't fit with it in there and it can cause bigger problems if it shears off. This won't be repaired.

The power feed appears to be leaking oil. Parts that we should consider replacing:
* 61 11636413 Seal, Shaft quantity 1
* 72 11630134 Gasket, Cover quantity 1
* 33 11630261 Bearing, Single Row, Loose Fit, quantity 2; these should be available from a bearing distributor

Good sources for Bridgeport parts: High Quality Tools, H&W Machinery Repair, Mataco

=== Upgrades ===

== Currently Authorized Users ==
{| class="wikitable" border="1"
! Qualified Member
! Trained By
! Proctored By
|-
|Tucker Tomlinson
|Danger Committee
|
|-
|Mike Warot
|Danger Committee
|
|-
|Ed Bennett
|Danger Committee
|
|-
|John-Paul(JP) Debauge
|Danger Committee
|
|-
|Ryan Pierce
|JP Debauge
|Ed Bennett
|-
|Everett Wilson
|JP Debauge
|Ryan Pierce
|-
|Derek Bever
|JP Debauge
|Everett Wilson
|-
|Elizabeth Koprucki
|JP Debauge
|Ryan Pierce, Everett Wilson
|-
|Anna Yu
|Ed Bennett
|Ed Bennett
|-
|Dean Anderson
|Ed Bennett
|Ed Bennett
|-
|Bart Dring
|Ed Bennett
|Ed Bennett
|-
|Greg "Nerobro" Teiber
|JP Debauge
|JP Debauge
|-
|Ray Doeksen
|JP Debauge
|JP Debauge
|-
|"Colorado" Rob Riggs
|JP Debauge
|Everett Wilson
|-
|Jeremy Bloyd-Peshkin
|Danger
|null
|-
|Todd Allen
|JP Debauge
|Everett Wilson
|-
|Ron Olson
|Derek Bever and Everett Wilson
|Everett Wilson
|-
|Michael Skilton
|Derek Bever and Everett Wilson
|Todd Allen
|-
|Alan Baker
|Tucker Tomlinson
|-
|[[User:amishhammer|Tom Judge]]
|Everett Wilson
|Everett Wilson
|-
|Ron Bean
|Todd Allen
|Todd Allen
|-
|George Shaw
|Todd Allen
|Todd Allen
|-
|[[User:ad9581|Arturo Duarte]]
|JP Debauge
|Todd Allen
|-
|Joao Santos
|Todd Allen
|Dean Anderson
|-
|Chris Agocs
|Everett Wilson
|Todd / Everett
|-
|Lucas Goossen
|Todd Allen
|Todd Allen
|-
|Ben Bogler
|Everett Wilson
|Todd Allen
|-
|Michael Patton
|Todd Allen
|Todd Allen
|-
|David Srebro
|Todd Allen
|Todd Allen
|-
|Daniel Sojka
|Todd Allen
|Todd Allen & Michael Patton
|-
|Allen Zalsman
|Todd Allen
|Todd Allen
|-
|[[user:justin|Justin T. Conroy]]
|Todd Allen
|Everett Wilson
|-
|Raj (Joseph Perera)
|Everett Wilson
|Everett Wilson
|-
|Scott Drane
|JP DeBauge and Todd Allen
|-
|Aaron Carlock
|JP Debauge
|JP Debauge
|-
|Brandon Love
|JP Debauge
|JP Debauge
|-
|Ryan Neuman
|JP Debauge
|JP Debauge
|-
|Sam Paris
|JP Debauge
|JP Debauge
|-
|Andy Muhic
|JP DeBauge
|JP DeBauge
|-
|Zachery Small
|Michael Patton
|Michael Patton
|-
|[[User:mct|McTavish McArdle]]
|JP Debauge
|-
|[[User:jonk|Jon Komperda]]
|Dean Anderson
|Dean Anderson
|-
|Jim Brink
|Jon Komperda
|Jon Komperda
|-
|Alan Feinerman
|Jon Komperda
|Jon Komperda
|-
|Abel Greenwald
|Ed Bennett
|-
|Andrew Wingate
|Todd Allen
|Todd Allen
|-
|Sean Nixon
|[[User:mct|McTavish McArdle]]
|-
|Ryan Himmelblau
|Todd Allen
|Todd Allen
|-
|Charles Harmata
|[[User:mct|McTavish McArdle]]
|-
|Szymon Mirek
|[[User:mct|McTavish McArdle]]
|-
|Chris Iacullo
|[[User:mct|McTavish McArdle]]
|-
|Sam Chen
|[[User:mct|McTavish McArdle]]
|-
|Zlatan Klebic
|[[User:mct|McTavish McArdle]]
|-
|Daniel Martinez Olivas
|[[User:mct|McTavish McArdle]]
|-
|David Earl
|[[User:mct|McTavish McArdle]]
|-
|Matt Maggio
|[[User:mct|McTavish McArdle]]
|-
|Jeff Benning
|[[User:mct|McTavish McArdle]]
|-
|Luis Colmenares
|[[User:mct|McTavish McArdle]]
|-
|Jennie Plasterer
|Abel Greenwald
|Abel Greenwald
|-
|Dave Solomon
|[[User:mct|McTavish McArdle]]
|-
|Brian Adamson
|[[User:mct|McTavish McArdle]]
|-
|Tim Redfield
|[[User:mct|McTavish McArdle]]
|-
|Dan Gulick
|[[User:mct|McTavish McArdle]]
|-
|Charlie Kepner
|[[User:mct|McTavish McArdle]]
|-
|Kevin Cluff
|[[User:mct|McTavish McArdle]]
|-
|Greg Bell
|[[User:mct|McTavish McArdle]]
|-}
|Ben Marshall
|[[User:mct|McTavish McArdle]]
|-
|Adam Ringwood
|[[User:mct|McTavish McArdle]]
|-
|Bogdan Chernov
|[[User:mct|McTavish McArdle]]
|-
|Paul Ocampo
|[[User:mct|McTavish McArdle]]
|-
|[[User:Jaypee|JayPee]]
|[[User:mct|McTavish McArdle]]
|-
|Nick Prorok
|McTavish McArdle
|-
|Michael Baker
|[[User:mct|McTavish McArdle]]
|-
|Stevan Dedovic
|Abel Greenwald
|-
|[[User:rchace|Raymond Chace]]
|Jim Brink
|-
|Brady Soule
|[[User:mct|McTavish McArdle]]
|-
|Jeff Gershune
|[[User:mct|McTavish McArdle]]
|-
|Oliver Sanchez
|[[User:mct|McTavish McArdle]]
|-
|Earl Wood
|[[User:mct|McTavish McArdle]]
|-
|Sean Blum
|[[User:mct|McTavish McArdle]]
|-
|Ethan Weiss
|[[User:mct|McTavish McArdle]]
|-
|Tom Cummings
|[[User:mct|McTavish McArdle]]
|-
|Dylan Ambrosini
|[[User:mct|McTavish McArdle]]
|-
|Ian Einhorn
|[[User:mct|McTavish McArdle]]
|-
|David Milligan
|[[User:mct|McTavish McArdle]]
|-
|[[User:Amethystdragon|Karl Schmidbauer]]
|[[User:mct|McTavish McArdle]]
[[Category:Shop Equipment]]
[[Category:Cold Metals]]

Lathe. Wen mini lathe

2020-11-30T17:59:34Z

Dmilligan:

{{Template:EquipmentPage
|owner = PS1
|certification=yes
|hackable = NO
|model = 3420T
|serial = NA
|arrived = Sept 2019
|doesitwork = yes
|contact = Wood Shop Area Host
|where = Wood Shop
|value = $200.00
|hostarea = Wood Shop
|image =
}}

=== Authorized Proctors ===

'''This tool requires authorization for use by an authorized proctor. Please contact one of the following to arrange authorization.'''

* Donzell Gordon

=== Authorized Users ===

{|Class="wikitable sortable" border="1" style="td { border: 1px solid #000000}"
|-
! Member !! Date !! Authorizer
|-
|
|-
| Donzell Gordon || Sept 2019 || Donzell Gordon
|-
| Ryan Pierce || 9/22/2019 || Donzell Gordon
|-
| Elizabeth Koprucki || 9/22/2019 || Donzell Gordon
|-
| David Milligan || 11/29/2020 || Donzell Gordon
|-
|}

=== notes ===

* RP has put together a nice page on pen turning...https://wiki.pumpingstationone.org/Pen_turning[https://wiki.pumpingstationone.org/Pen_turning link title]
*Perfect for pens, chess pieces, and other small workpieces
*PS:One has pen turning tooling. Documentation is available [[Pen turning|here]].
*Soft start variable speed motor adjusts anywhere from 750 to 3200 RPM
*Includes a 5-inch face plate for turning non-spindle workpieces
*Fits workpieces up to 12 inches long and 8 inches wide (max recommended working diameter: 5 inches)
*Features a 2-amp motor, an MT1 spindle and tailstock taper, and two interchangeable tool rests

[[Category:Shop Equipment]]
[[Category:Wood Shop]]

Tier 1 Cold Metals Authorization

2020-11-29T08:56:12Z

Dmilligan:

[[Category:Cold Metals]]

In the cold metals area we have grouped together authorizations on the non-precision cutting tools into a single authorization. The [[Rockwell drill press]], [[Johnson Bandsaw]], and [[DoAll Bandsaw]] are under the Cold Metals Tier 1 authorization process. The session covers basic operation and safety on the machines.

'''NOTE: Prior to April 2017, the [[Bench Grinder (6in)]], [[Sears Belt Sander|Belt Sander]], and [[DeWalt Chop Saw]] were included in this authorization.'''

Monitor the mailing list for times and dates, or contact one of the listed authorizers.

= Tools Requiring Cold Metals Tier 1 =

[[Clausing Lathe|Clausing metal lathe]]

[[Bridgeport Knee Mill|Bridgeport milling machine]]

[[Tormach 1100 series CNC mill|Tormach CNC Mill]]

= Cold Metals Tier 1 Authorizers =

Please consult the [[Volunteer_Positions#Cold_Metals_Authorizers]] page for a current list of Cold Metals Tier 1 authorization volenteers.

== How to become a Authorizer ==

We want as many people available to do Cold Metals Tier 1 authorizations as we can get. The idea is to promote safety, and get people used to the sounds that a machine tool cutting well makes.

New authorizers get authorized to authorize others by (1) having some amount of presence in the shop and (2) closely following the "script" during EITHER a "dry-run" authorizing session given to an authorized authorizer -- or conducting a real-live authorizing session while being observed by an authorized authorizer. During such a session, the observing authorizer should _not_ have to speak. Obviously if the new authorizer-to-be has *significant* problems in communication of the content of the "script", the observing authorizer will contribute to the discussion. For the new authorizer-to-be it's a test, not an opportunity for team-teaching.

= Tool information =

== Safety ==

=== General Personal Safety, and Consideration of Others ===

You must work safely. Your actions must not threaten the safety of you, of others, or the tools.You should never operate machine tools under the influence of drugs (prescription or otherwise) or alcohol.It is your responsibility to protect your eyes. Safety goggles may be provided in the cage for activities that have the potential to generate flying particles. Activities which may, depending on circumstances generate flying particles include but are not limited to drilling, sawing, lathing, milling, hammering, chiseling, grinding, and belt sanding. Don't use goggles which are dirty or fogged-up. If cleaning is required cleansing pads may be available in the cage. To clean your goggles, all surfaces that have contact with the skin must be wiped down. The lens should be wiped down, both front and inside. If you choose to use purchase your own goggles be sure they are rated for labeled z87 (this should be written or stamped on the side of all goggles) and have side shields.Disposable earplugs may be supplied in the cage. Follow the instructions on the dispenser. They are surprisingly more effective if you do. Many types of Personal Protective Equipment (PPE) are not effective if used improperly. If you don't know whether or how to use your protective equipment, read the instructions.Because of cost and hygiene problems, PS:1 cannot be depended upon to stock dust masks/respirators. If your work has the potential to generate dusts, mists, or vapors, you may proceed only by following these rules:

# Get your own respiratory protection. Ace Hardware has many types. Make sure the mask or filter is really for the substance confronting you. Do not, for instance, use a paper dust mask for organic paint fumes. Follow the mask manufacturer's instructions.
# Work in the back dock when possible, or with an exhaust fan on.
# If it is necessary to work in the main shop be sure you aren't inflicting your fumes or dust on someone else. It would be excellent if you as the fume generator waits until no one is present who could be harmed or inconvenienced by your activities.

When using power tools, remove gloves, watches, jewelry, and roll up your sleeves. Keep your hair tied back and tucked away. This is especially true for the drill presses, mill, and lathe. Tools with moving parts can injure your hands or catch your hair and pull your head into the machine. Gloves and loose clothing can also get caught in moving machinery. Never put your hand in the vicinity of any moving part of any machine. When adjusting the speed of a belt-driven machine (drill press, lathe, mill or other step-pulley drive) unplug the machine before putting your hands into the drive belts. Every Time.If in using any machine that cuts material, you cannot see a cut in progress because of chips or dust produced by the cutting process, a chip brush to clear the work zone -- never use your hands while the tool is on.PS:1 keeps fire extinguishers and first aid supplies on hand. It would be good to familiarize yourself with their locations before you begin your work.

It is best to not work alone in the shop while using machine tools. If you are hurt and cannot dial 911, another person in the space could do that for you. Use the right tool for the job. Incorrect tool usage produces bad results, and can be detrimental to you, your work, and the tools.Knowing a tool is knowing how it works. For instance, power tools make different sounds when they are working. Some sounds are HAPPY and some sounds are SAD. If you don't know how a tool should work, in spite of the demonstration given with this authorization, ask somebody who does know.

=== Safe and Proper Use of the Power Tools ===
This is not an instructional guide to being a machinist. For skill development in using tools in fabrication, you should take a class of some kind and practice, practice, practice. In this authorization, you will be shown only the basic operation of the tools. The purpose of these minimal illustrations of technique is so that you might have some idea of the types of things the tools are capable of. Authorization gives you permission to use the tools. Authorization to use the tools is not a certification of your competence.

== Tool use ==

=== [[Johnson Bandsaw|Horizontal Bandsaw]] ===

The horizontal bandsaw is only for cutting metals.

Clamp your work securely in the vise. Be sure that the work cannot rotate or flip around in the vise when the saw is pulling the blade through the cut. Close the blade guides to the minimum distance that will (1) clear the workpiece and (2) not interfere with the movement of the saw at the bottom end of its travel.

Set the force-control weight to apply proper pressure to the cut. In most cases, this is at minimum. (Closer to the motor is less cut force). Open the hydraulic valve to produce a good feed rate. If the blade seems like it's starting to snag the workpiece or clog the teeth, take a lighter cut by decreasing the feed rate. If the saw is not producing a chip, increase the feed rate. Unless there is a reason to be taking a very light cut, the sound of the saw teeth should be consistent during the entire rotation of the blade. Except when taking a very light cut, the sound of the saw teeth contacting the material should be consistent and chips should form at an even rate. Using coolant helps to preserve blade life, and increase the speed and quality of the cut. It also makes a mess.

A major cause of blade breakage is thin workpieces snagging the saw blade teeth. Snagging causes teeth to be broken and can also cause the blade to stall or come off the wheels. Check the blade for missing teeth before using the saw. A blade with missing teeth is usually not fit for use. Using a fine pitch blade on soft materials like aluminum can clog the teeth and cause the blade to grab the work and stall. Be sure the chips are clearing the teeth. If not, use coolant or a wire brush to push the chips from the teeth. Using a coarse blade on steel will cause the teeth to snag on the work and break off. Turning the saw off (stopping the motor) while the saw is in a cut can cause broken teeth. Any problem that can break a tooth can also cause the blade to come off the wheels. Use the right blade for the work. Trying to mediate a cut on the horizontal bandsaw can cause saw blade teeth to be knocked off the blade; set the saw to lower the blade slowly into the work and then let go. Be gentle with the hydraulic valve. It only requires a feather touch to turn it. Over-torquing the valve handle can damage the valve. If your workpiece gets snagged and stuck on the blade, stop the saw immediately. Unplug the saw, then try to pull the workpiece straight down off the blade.

To free the stuck workpiece, use a rocking or wiggling motion, in-line with the axis of the blade. Don't twist the blade. A bend or kink ruins the blade. If you still can't get your workpiece off the blade, don't force it. Tag the saw as “out of order” and post a message to the list saying “The blade on the horizontal bandsaw is stuck. Could someone please un-stick it.” If the blade comes off the wheels, tag the saw and post the problem to the list.

= People who are Authorized for Cold Metals Tier 1 =
{| class="wikitable" border="1"
! Qualified Member
! Trained By
!Date Trained
|-
|Will Brown
|Sam
|9/5/18
|-
|Adam Glick
|Ed Bennett
|
|-
|Jeffrey Camealy
|Ed Bennett
|
|-
|Tina Croniser
|Ed Bennett
|
|-
|Sevin Straus
|Ed Bennett
|
|-
|Vladamir Riazanski
|Ed Bennett
|
|-
|James Porter
|Ed Bennett
|
|-
|Greg Teiber
|Ed Bennett
|
|-
|Everett Wilson
|Ed Bennett
|
|-
|Derek Bever
|Ed Bennett
|
|-
|Jay Hopkins
|Ed Bennett
|
|-
|James Porter
|Ed Bennett
|
|-
|Eric Stein
|Tucker Tomlnson
|
|-
|Todd Allen
|Ed Bennett
|
|-
|Mac MacDevitt
|Ed Bennett
|
|-
|[[User:scyg|Simon Cygielski]]
|Ed Bennett
|
|-
|Robb Rigs
|Ed Bennett
|
|-
|Arturo Duarte
|Ed Bennett
|
|-
|Michael Skilton
|Tucker Tomlinson
|
|-
|[[User:Justin|Justin T. Conroy]]
|Ed Bennett
|
|-
|[[User:davidfell|David Fell]]
|Ed Bennett
|
|-
|[[User:rdoeksen|Ray Doeksen]]
|Ed Bennett
|
|-
|Ryan Pierce
|Ed Bennett
|
|-
|Elizabeth Koprucki
|Ed Bennett
|
|-
|Casey Olson
|Ed Bennett
|
|-
|Ron Olson
|Ed Bennett
|
|-
|Thomas Wright
|Ed Bennett
|
|-
|Tom Judge
|Tucker Tomlinson
|
|-
|Edward Muela
|Anna Yu
|5/13/14
|-
|Samuel Swope
|Anna Yu
|5/13/14
|-
|Chris Agocs
|Anna Yu
|6/3/14
|-
|Justine Miles
|Anna Yu
|6/3/14
|-
|Robert Grossman
|Ed Bennett
|
|-
|Tom Forajter
|Thomas Wright
|
|-
|[[User:ahbaker|Alan Baker]]
|Tucker Tomlinson
|
|-
|Jeff McBride
|Ed Bennett
|10/9/14
|-
|Mike Kislovsky
|Ed Bennett
|10/9/14
|-
|Arjun Wadnerkar
|Ed Bennett
|10/9/14
|-
|Oscar Villareal
|Ed Bennett
|10/9/14
|-
|TomF (? 7-17)
|Thomas Wright
|
|-
|Rich Smith
|Thomas Wright
|
|-
|George Shaw
|Thomas Wright
|
|-
|Ron Bean
|Ed Bennett
|
|-
|John Butera
|Ed Bennett
|10/18/14
|-
|Alex Schaffer
|Ed Bennett
|10/18/14
|-
|Daniel Loeser
|Ed Bennett
|10/18/14
|-
|Jonathan Bisson
|Ed Bennett
|10/18/14
|-
|Kyle Bieneman
|Todd Allen
|11/09/14
|-
|Scott Little
|Todd Allen
|11/09/14
|-
|RJ Metzger
|Todd Allen
|11/09/14
|-
|Giovanni Arroyo
|Todd Allen
|11/09/14
|-
|Joao Santos
|Todd Allen
|11/26/14
|-
|Nicholas Haldereman
|Todd Allen
|11/26/14
|-
|Doorman Dave
|Todd Allen
|11/26/14
|-
|Stephen Ioannou
|Todd Allen
|11/26/14
|-
|Lucas Goossen
|Todd Allen
|12/10/14
|-
|[[user:RogerMoore|Roger Moore]]
|Todd Allen
|12/10/14
|-
|[[User:Mwilkens|Matt Wilkens]]
|Todd Allen
|12/10/14
|-
|Rhonda Jackson
|Todd Allen
|12/10/14
|-
|Matt Meshulam
|Todd Allen
|12/21/14
|-
|Kevin Pulver
|Todd Allen
|12/21/14
|-
|Andrew Camardella
|Todd Allen
|12/21/14
|-
|Mike Coriale
|Todd Allen
|12/21/14
|-
|Nick Naro
|Todd Allen
|1/11/15
|-
|John Farmer
|Todd Allen
|1/11/15
|-
|[[user:Jaypee|Jay Pee]]
|Todd Allen
|1/11/15
|-
|Sam Paris
|Todd Allen
|1/21/2015
|-
|Jake Rush
|Todd Allen
|1/21/2015
|-
|Carolyn Ignacio
|Todd Allen
|1/21/2015
|-
|Andrew Sowa
|Todd Allen
|1/21/2015
|-
|Hilary Lee
|Todd Allen
|1/21/2015
|-
|Eric Slehofer
|Todd Allen
|1/28/2015
|-
|Sam Reicks
|Todd Allen
|1/28/2015
|-
|Tyler Matthew
|Todd Allen
|1/28/2015
|-
|Ben Bogler
|Todd Allen
|1/28/2015
|-
|Brittany Krawczyk
|Todd Allen
|1/28/2015
|-
|Cary Lahucik
|Todd Allen
|1/28/2015
|-
|Eric Yu
|Todd Allen
|2/8/2015
|-
|Davis Mazariegos
|Todd Allen
|2/8/2015
|-
|Dan Baltudis
|Todd Allen
|2/8/2015
|-
|Shae Kurko
|Todd Allen
|2/25/2015
|-
|Curtiss Cooke
|Todd Allen
|02/08/15
|-
|Ryan Taylor
|Everett Wilson
|03/04/15
|-
|Joe Wallace
|Todd Allen
|03/08/15
|-
|Josh Myers
|Todd Allen
|03/08/15
|-
|[[User:glenn|Glenn Powers]]
|Todd Allen
|03/08/15
|-
|Daniel Sojka
|Todd Allen
|03/25/2015
|-
|Michael Patton
|Todd Allen
|03/25/2015
|-
|Kevin M Sampson
|Todd Allen
|07/22/2015
|-
|Steve Farkas
|Everett Wilson

|-
|Josh Cooper
|Todd Allen
|09/30/2015
|-
|Sheila Miguez
|Everett Wilson
|2015/12/29
|-
|Zonghe Chua
|Michael Patton
|1/10/16
|-
|Brandon Love
|Michael Patton
|1/27/16
|-
|John McDonald
|Michael Patton
|3/6/16
|-
|Zachery Small
|Michael Patton
|5/1/16
|-
|Josh Younger
|Michael Patton
|5/7/16
|-
|Andy Muhic
|Michael Patton
|5/7/16
|-
|Spencer Simms
|Michael Patton
|5/26/16
|-
|Noah Lambert
|Michael Patton
|6/15/16
|-
|Ian Monroe
|Michael Patton
|6/29/16
|-
|Joe Iklov
|Michael Patton
|6/29/16
|-
|Jim Brink
|Michael Patton
|6/29/16
|-
|[[user:mct|McTavish McArdle]]
|Michael Patton
|2016-07-10
|-
|Patrick Bowling
|Michael Patton
|8/14/16
|-
|Ashley Matrisciano
|Michael Patton
|8/14/16
|-
|Juan Ramos
|Michael Patton
|8/14/16
|-
|Leo Rodman
|Dean?
|9/14/16
|-
|Dan Conrad
|Michael Patton
|10/05/16
|-
|Aaron Mintz
|Michael Patton
|10/20/16
|-
|Brian Carstensen
|Michael Patton
|10/20/16
|-
|Chris Ruhland
|Michael Patton
|11/7/16
|-
|Simon Pyle
|Michael Patton
|12/5/16
|-
|Josip Fijacko
|Michael Patton
|12/5/16
|-
|Adam Stein
|Michael Patton
|1/14/17
|-
|Alex Berkowitz
|
|-
|Ese Osaghae
|Chris Ruhland
|01/14/17
|-
|Paul McClay
|Chris Ruhland
|3/23/17
|-
|Ed Breuer
|Chris Ruhland
|04/09/2017
|-
|Haddon Pearson
|Chris Ruhland
|4/29/17
|-
|Alan Feinerman
|Sam Olendorf
|06/12/2017
|-
|Andrew Wingate
|Todd Allen
|7/17/17
|-
|Stephen Foulkes
|[[user:mct|McTavish McArdle]]
|10/16/17
|-
|Charles Harmata
|[[user:mct|McTavish McArdle]]
|2017-10-23
|-
|Matthew DePree
|[[user:mct|McTavish McArdle]]
|2017-10-31
|-
|Szymon Mirek
|[[user:mct|McTavish McArdle]]
|2017-10-31
|-
|Arjun Sharma
|[[user:mct|McTavish McArdle]]
|2017-10-31
|-
|[[user:GalaxyCascade|Steve Griegoliet]]
|Sam ?
|2017-12-13
|-
|Jeff Gershune
|Sam
|2018-1-24
|-
|Matthew Maggio
|[[user:mct|McTavish McArdle]]
|2018-04-03
|-
|Wayne Hendryx
|[[user:mct|McTavish McArdle]]
|2018-04-09
|-
|Alisha Ciardi
|Jim Brink
|2018/05/08
|-
|David Earl
|Abel Greenwald
|2018/05/08
|-
|Sam Wallinga
|Sam
|2018/05/30
|-
|Maciej Warchalowski
|Sam Olendorf
|2018/06/13
|-
|Earl Wood
|Sam Olendorf
|6/13/2018
|-
|Dave Solomon
|Sam Olendorf
|7/11/2018
|-
|Ryan Treacy
|Sam Olendorf
|9/19/2018
|-
| Jacob Dawson
| Sam Olendorf
| 9/19/2018
|-
|Ben Dibuz
|[[user:mct|McTavish McArdle]]
|11/1/2018
|-
|Marcos Ruiz
|[[user:mct|McTavish McArdle]]
|2018-11-07
|-
|Jim Lund
|[[user:mct|McTavish McArdle]]
|2018-11-13
|-
|Tatjana Paunesku (tpaune)
|[[user:mct|McTavish McArdle]]
|11/27/18
|-
|Matthew Slizys
|[[User:CrazyUncleDave|Dave Solomon]]
| 11/18/18
|-
|Krystian Jasiak
|[[User:CrazyUncleDave|Dave Solomon]]
| 11/18/18
|-
|Michael Valdez
|[[User:CrazyUncleDave|Dave Solomon]]
| 11/18/18
|-
|Joe Mertz
|[[User:CrazyUncleDave|Dave Solomon]]
| 11/18/18
|-
|Daniel Gulick (dgulick)
|[[user:mct|McTavish McArdle]]
|12/12/18
|-
|John Zappa (jzappa)
|[[user:mct|McTavish McArdle]]
|11/27/18
|-
|Brandon Bay (bbay)
|[[user:mct|McTavish McArdle]]
|1/29/19
|-
|Oliver Sanchez(osanchez)
|[[user:mct|Dave Solomon]]
|12/18/18
|-
|Brian Barnt (bbarnt)
|Jim Brink
|02/09/2019
|-
|Will Spears
|Jim Brink
|02/??/2019
|-
|Charlie Kepner
|Jim Brink
|01/12/2019
|-
|Kevin Schwartzenberg (schwartz)
|[[user:mct|Dave Solomon]]
|11/27/18
|-
|Marco Rios
|[[user:mct|Dave Solomon]]
|03/12/2019
|-
|Jamin Nollsch (jaaamin)
|[[user:mct|McTavish McArdle]]
|2/17/2019
|-
|Kevin Cluff (cluffkd)
|[[user:mct|McTavish McArdle]]
|2/14/2019
|-
|Ella Gentz (ellagentz)
|Abel Greenwald
|03/19/2019
|-
|Mike Bart
|Abel Greenwald
|03/19/19
|-
|Stevan Dedovic (sdedovic)
|Abel Greenwald
|03/19/19
|-
|Greg Bell
|Jim Brink
|3/23/2019
|-
|Sky Nova
|Dave Solomon
|3/23/2019
|-
|Sean Blum
|Dave Dynatac
|3/27/2019
|-
|Charlie Melidosian
|[[user:mct|McTavish McArdle]]
|5/28/2019
|-
|[[User:morrand|Andrew Morris]]
|[[User:CrazyUncleDave|Dave Solomon]]
|5/28/2019
|-
|Paul Ocampo
|[[User:CrazyUncleDave|Dave Solomon]]
|5/28/2019
|-
|Adam Ringwood
|[[User:CrazyUncleDave|Dave Solomon]]
|5/31/2019
|-
|Bogdan Chernov
|[[User:CrazyUncleDave|Dave Solomon]]
|6/4/2019
|-
|Chen Chen
|[[User:CrazyUncleDave|McTavish McArdle]]
|6/6/2019
|-
|Tom Henderson
|[[user:mct|McTavish McArdle]]
| 5/28/19
|-
|Mariano Muñoz
|[[user:mct|McTavish McArdle]]
| 07/07/19
|-
|Michael Krueger
|[[user:mct|McTavish McArdle]]
| 07/07/19
|-
|-
|Michael Wilkin
|[[user:mct|McTavish McArdle]]
| 07/07/19
|-
|Charles Ware
|[[user:mct|McTavish McArdle]]
| 07/10/19
|-
|[[user:treiber|Mark Treiber]]
|[[user:mct|McTavish McArdle]]
| 07/10/19
|-
|[[user:dlariviere|D. Lariviere]]
|[[user:mct|McTavish McArdle]]
| 07/23/19
|-
|Patrick Cook
|[[user:mct|McTavish McArdle]]
|7/23/19
|-
|Matt Saunders
|[[user:mct|McTavish McArdle]]
|7/23/19
|-
|Ilya Deynega
|[[user:mct|McTavish McArdle]]
|7/23/19
|-
|[[user:wdhunt|Bill Hunt]]
|[[user:mct|McTavish McArdle]]
|8/13/19
|-
|Curt Williams
|[[user:mct|McTavish McArdle]]
|8/13/19
|-
|Joe Kardia
|[[User:CrazyUncleDave|Dave Solomon]]
|8/15/2019
|-
|Stephen Bouchard
|[[user:mct|McTavish McArdle]]
|8/20/19
|-
|Daylan Dufelmeier
|[[user:mct|McTavish McArdle]]
|8/20/19
|-
|Tim Bielawa
|[[user:mct|McTavish McArdle]]
|8/20/19
|-
|[[User:NewFatMike|Mike Thompson]]
|[[user:mct|McTavish McArdle]]
|08/27/19
|-
|Michael Baker
|[[user:mct|McTavish McArdle]]
|08/27/19
|-
|[[User:Robge|Rob German]]
|McTavish McArdle
|9/24/19
|-
|Alex Tillit
|McTavish McArdle
|9/24/19
|-
|Michael (Mike) Radziszewski
|McTavish McArdle
|9/24/19
|-
|Lavande Chou
|[[user:mct|McTavish McArdle]]
|10/08/19
|-
|Paul Lukas
|[[user:mct|McTavish McArdle]]
|10/08/19
|-
|[[user:mvictoras|Victor Mateevitsi]]
|[[user:mct|McTavish McArdle]]
|10/21/19
|-
|[[user:rchace|Raymond Chace]]
|[[User:CrazyUncleDave|Dave Soloman]]
|11/14/19
|-
|[[user:mventimiglia|Mark Ventimiglia]]
|[[user:CrazyUncleDave|Dave Solomon]]
|11/19/19
|-
|[[user:samphoton|Sam Cooler]]
|[[user:mct|McTavish McArdle]]
|11/23/19
|-
|Selden Paterson
|[[user:mct|McTavish McArdle]]
|11/05/19
|-
|Eric Byrne
|[[user:mct|McTavish McArdle]]
|1/21/20
|-
|William Flynn
|[[user:mct|McTavish McArdle]]
|02/04/2020
|-
|Michael Cox
|Ben Marshall
|01/23/2020
|-
|Luke Wilk
|[[user:mct|McTavish McArdle]]
|02/11/2020
|-
|Brent Myers
|Ben Marshall
|03/11/2020
|-
|[[User:sranjb2|Shayan Ranjbari]]
|[[user:CrazyUncleDave|Dave Solomon]]
|07/13/2020
|-
|Grant Wagner
|[[user:CrazyUncleDave|Dave Solomon]]
|08/15/2020
|-
|Ralph Brendler
|[[user:mct|McTavish McArdle]]
|2020-06-19
|-
|Phillip Jividen
|Abel Greenwald
|2020-09-20
|-
|[[User:Tcummings|Tom Cummings]]
|[[user:CrazyUncleDave|Dave Solomon]]
|09/21/2020
|-
|[[User:schultzy51|Ken Schultz]]
|[[user:mct|McTavish McArdle]]
|10/01/2020
|-
|[[User:Amethystdragon|Karl Schmidbauer]]
|[[user:mct|McTavish McArdle]]
|10/15/2020
|-

|Ellen Lustig
|[[user:mct|McTavish McArdle]]
|10/28/2020
|-
|David Milligan
|[[user:CrazyUncleDave|Dave Solomon]]
|11/28/2020
|-
|}