Difference between pages "Projects/RFIDpop" and "Metal Lathe"

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{{Template:EquipmentPage |owner=ENTS |model=Craftex B2227L |serial=SERIAL NUMBER |arrived=June 2, 2014 |doesitwork=Works |contact=[[User:Orcinus|Raphael B.]] |where=Metalworking bay  |certification= Yes |hackable= No |value=$1300 |itemphoto=[[File:B2227L.jpg]]}}<br>
 +
== Specifications ==
 +
Motor: 3/4 HP, 110V, 8.8 Amps <br>
 +
Reversing Switch <br>
 +
Twin Belt Drives to 6 Speed (115 - 1626 RPM) Gearbox <br>
 +
18" Between Centers <br>
 +
Swing Over Bed: 10" <br>
 +
Swing Over Cross Slide: 5" <br>
 +
1" Spindle Bore <br>
 +
MT4 Spindle Taper <br>
 +
Number of Inch Threads: 20 <br>
 +
Inch Thread: 8 - 56 TPI <br>
 +
Number of Metric Threads: 9 <br>
 +
Metric Thread: 0.5 - 3.0 mm <br>
 +
Lead Screw: 7 TPI <br>
 +
Longitudinal Feed: 0.0025" - 0.005" per revolution <br>
 +
Tail Stock: MT2, 2" quill travel <br>
 +
Cross Slide: 4-1/2" Travel <br>
 +
Maximum Tool Size: 9/16" <br>
 +
Compound: 1" Travel <br>
 +
Max. Longitudinal Travel of Tool Slide: 2.75" <br>
  
== RFID Enabled Pop Machine AKA Project "Pop-pi"==
+
== Accessories/Tooling ==
 +
3-jaw self-centering chuck <br>
 +
Right hand / Left hand / Center indexable carbide turning tools <br>
 +
Boring bar, indexable carbide<br>
 +
HSS turning/facing, threading, and 45 deg chamfering tools <br>
 +
Parting blade, 3/32" x 1/2" HSS<br>
 +
Tailstock drill chuck, 1/2" capacity <br>
 +
MT2 dead center for tailstock <br>
 +
MT4 dead center for spindle <br>
 +
Center drills #3, #4, #5 <br>
 +
Fractional drills 1/16"-1/2" by 64ths, Numbered drills #1-60, Letter drills A-Z <br>
 +
5 pc zero-flute 82 deg. countersinks <br>
 +
Assorted wrenches <br>
  
 +
== Accessories/Tooling Wishlist ==
 +
4-jaw independent chuck with adapter <br>
 +
29 pc fractional reamer set (1/16"-1/2" by 64ths) <br>
 +
14 pc over-under reamer set <br>
 +
25 pc metric reamer set <br>
  
== History ==
+
== Equipment Settings ==
 +
Spindle speed: Be mindful of what spindle speed the gearbox is set to. Different diameters and materials require different spindle speeds. Consult your Machinist's Handbook, the internet, or the handy (but woefully incomplete) chart on the wall behind the lathe for appropriate spindle speeds. For example, brass and aluminum can be turned much faster than steel or cast iron.
  
After the kind donation of a 70'sish Coca-Cola Vending machine, we started tearing into it to get it working. While there were a few issues off the start, it's in good mechanical order and tests showed it's power consumption was >50% less than the existing smaller pop machine in the space.
+
== Safety ==
 +
1. NEVER leave the key in the chuck. Never. Not even for one second. Never never never. <br>
 +
2. Do not pick up chips unless you are absolutely 100% certain they have cooled. Once they have cooled, let them cool some more. Even then, it is better to simply push them off with a brush or pick up the long stringy ones with a pair of pliers. Further, this should never be done with the machine running; long chips could snag on the part or chuck and start whipping around. <br>
 +
3. Parts should never protrude from the chuck jaws more than 3 times the diameter of the part without being supported by a dead or live center in the tailstock, or a steady rest (that we do not have yet). Parts shorter than their diameter should ideally be at least halfway in the chuck. <br>
 +
4. Disengage the feedscrew transmission when not using it, and of course the halfnut on the carriage. <br>
 +
5. Long, thin parts that extend out the back of the headstock should be sheathed inside a very loose-fitting fixed tube to prevent them from whipping around and bending over, essentially becoming a weedwhacker on steroids. <br>
 +
6. Regularly check that the chuck is firmly affixed to the spindle nose. There is a short allen key in the lathe tool box that will fit between the spindle nose and gearbox. <br>
 +
7a. When polishing with abrasive paper/strips, never let it wrap more than halfway around the part. It can snag on itself and pull your fingers into the part. <br>
 +
7b. If polishing the inside diameter, never never never insert your finger in the hole. Wrap the abrasive around a small wood or plastic dowel that is significantly smaller than the ID of the hole. <br>
 +
8. Verify the spindle speed is appropriate for the diameter and material you are working on. <br>
 +
9. No long hair! NO LONG HAIR! Not even a ponytail is acceptable. If you have long hair, put it up under a hat or in a bun or something. Tying it back is NOT acceptable. We would rather see you looking silly than looking dead. If you don't believe me, do a google image search for "lathe accident" and you will see why. No loose long sleeve shirts, no dangling drawstrings on hooded sweaters, no loose jewelry/rings, no headphones, no neckties. If you are observed with any of these while operating this machinery, you will be asked to stop immediately. <br>
 +
10. Safety glasses are always a very good idea, however, if they fog up and obstruct your vision, stop what you are doing and get a different pair. It's still extremely dangerous not being able to see, even if your eyes are protected. <br>
 +
11. Do not wear gloves while working on the lathe. They can snag and pull you in.
  
One major problem was that the coin mechanism would not accept newer loonies and toonies. A replacement mechanism would be $200 or more. A bit pricy for a starving hackerspace, so we are doing what all good hackers do, overengineer a solution with parts at hand. In this case, utilize the door RFID tags the members have anyways and use them to debit from a pre paid pop account.
+
== Known Problems ==
 +
The quill in the tailstock is not captive. If you crank the feed too much, it WILL disengage from the feedscrew, possibly screwing up your work. Be cautious of this. If you can see the keyway machined in the top of the quill, it's starting to extend too far. Stop your work, retract the quill, and reposition the tailstock closer to the work. This is a design flaw, not a failure of the equipment. We will (eventually) take steps to ensure the quill is captive, probably by machining a groove in the bottom of the quill and adding a set screw, as is standard on many lathes.
  
== Help Wanted ==  
+
== Future Ideas ==
 
+
Add a chip pan below the lathe to catch aluminum (and only aluminum, do not cross-contaminate!) for recovery and recycling in the foundry.
Want to help out? Interested in learning something new and expanding your skill set? Have a cool idea you want to include into the project?
+
 
+
Join the Pop-PI project!
+
Do you know PHP, would you like to learn PHP?
+
 
+
We are looking for people with an interest in helping out with the following phases of the project. We will offer assistance and training for any piece involved.
+
 
+
*Display Design - ART - Replace the coke sign with a plexiglass version, needs to be able to show a screen.
+
*Screen Saver - Screen saver that would display fake ad's
+
*Screen mount - Mount a monitor to the outer door
+
*Outer Shell Design - self explanatory
+
*PHP Web Interface - only needs to interface with Pay Pal and save transaction records in the database
+
 
+
== Mechanics ==
+
 
+
The machine is a Vendo V384. [http://soda-machines.com/index.php?option=com_content&task=view&id=554&Itemid=14 Soda-Machines.com]
+
 
+
Orcinus did much of the work to figure out the mechanics of the machine and how to bypass the coin mech to allow us to dispense product.  It's actually very easy.  On the connector to the coin mech, short pins 1-7 together (all the time) and then momentarily contact pins 1-3 and then make your selection.
+
 
+
The original coke sign is a plexiglass insert, easily replaced.  Behind it <strike>is</strike> was a florecent ballast with a 120v supply line running to it, now that line is powering the Pi and all the rest.
+
 
+
As of 9/26/13:
+
* The mechanical components have been de-greased and lubricated.
+
* Column #2 was fully rebuilt after it was found jammed.
+
* All column dispensing mechanisms are working in an empty state.
+
* 3 columns were stocked with 12+ cans each and dispensed properly.
+
* Proper loading configuration was figured out and will be documented
+
* Plastic exit chute was found to be stuck shut from a long ago exploded can.  Removed and thougholy washed
+
* Monitor has been mounted, though mounting scheme may change in the future
+
* Pi and other components installed and a first run of RFID enabled dispensing is available
+
 
+
To-Do:
+
* Clean all surfaces, particularly the compressor compartment.
+
* Clean and measure outside surfaces for painting/decals
+
* Paint trim areas and fix chipping
+
 
+
'''Photo's:'''
+
 
+
Photo of the internal electromechanical schematic:
+
[[Media:RFIDpop_mech_schematic.jpg]]
+
 
+
Photo of the Prototype system in it's first live test on the machine (it worked!)
+
[[Media:Pop-Pi_first_test.jpg]]
+
 
+
Photo of the replacement Plexiglass sign in it's test fit (note the blue protective plastic is still in place)
+
[[Media:Pop-Pi_Plex_Test_fit.jpg]]
+
 
+
Photo of Orcinus playing around
+
[[Media:Pop-Pi_Orc_face.jpg]]
+
 
+
== Goal ==
+
 
+
With the participation and collaboration of the ents membership, bring the donated Pop machine back into service.
+
 
+
To provide a project for multiple members to collaborate together to create a near 0 administration pop machine/pop account tracking system.
+
 
+
To create a low hassle method of buying caffeine.
+
 
+
To promote more collaborative team building projects within the membership that cross disciplines and foster education and participation.
+
 
+
== Feature Roadmap ==
+
 
+
Planned and Implemented features, if you would like to participate or learn about any of the features contact the people who are associated with the feature or talk to one of us.
+
 
+
 
+
   
+
<table border = 1 width = 100%>
+
    <tr>
+
        <th>Feature
+
        </th>
+
        <th>Description
+
        </th>
+
        <th>Version
+
        </th>
+
        <th>Complete
+
        </th>
+
        <th></th>
+
    </tr>
+
    <tr>
+
        <td>Read RFID
+
        </td>
+
        <td>
+
            Ability to read members&#39;s RFID tag</td>
+
        <td>1
+
        </td>
+
        <td>Yes
+
        </td>
+
      <td>Render, Colin
+
        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Credit Vending Machine</td>
+
        <td>
+
            Ability to credit the vending machine to allow the dispencing of caffeene</td>
+
        <td>1</td>
+
        <td>Yes</td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Track Member Account</td>
+
        <td>
+
            Ability to track member&#39;s pop account balance</td>
+
        <td>1</td>
+
        <td>Yes</td>
+
<td>Colin
+
        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Deduct From Member Account</td>
+
        <td>
+
            Ability to deduct a credit from a members&#39;s account balance</td>
+
        <td>1</td>
+
        <td>Yes</td>
+
<td> Colin
+
        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Email Balance to Member</td>
+
        <td>
+
            Ability to email a balance to a member&#39;s account from pop.pi@ents.ca</td>
+
        <td>2</td>
+
        <td>No</td>
+
<td>Render, Colin
+
        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Member Account Top Up</td>
+
        <td>
+
            Ability to top up a members account.</td>
+
        <td>2</td>
+
        <td>No</td>
+
<td>Colin
+
        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Pay Pal Top Up</td>
+
        <td>
+
            Ability to top up a members account from paypal payment</td>
+
        <td>TBD</td>
+
        <td>No</td>
+
<td>        </td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Video Display Balance</td>
+
        <td>
+
            Video display member balance information</td>
+
        <td>3</td>
+
        <td>No</td>
+
<td></td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Video Advertizing</td>
+
        <td>
+
            Make use of the video monitor for displaying ad&#39;s</td>
+
        <td>4</td>
+
        <td>No</td>
+
<td></td>
+
    </tr>
+
 
+
    <tr>
+
        <td>Mounting Brackets</td>
+
        <td>3D Printed Mounting Brackets Modeled to hold the PI and Relay</td>
+
        <td>2</td>
+
        <td>No</td>
+
<td></td>
+
    </tr>
+
    <tr>
+
        <td>RFID Mounting</td>
+
        <td>3D Printed Mounting Brackets Modeled to hold the RFID where the Change was inserted.</td>
+
        <td>3</td>
+
        <td>No</td>
+
<td></td>
+
    </tr> 
+
    <tr>
+
        <td>Bitcoin Payments</td>
+
        <td>Have the ability to take bitcoin payments.</td>
+
        <td>TBD</td>
+
        <td>No</td>
+
<td></td>
+
</tr>
+
    <tr>
+
        <td>Speaker Feedback</td>
+
        <td>Make use of the audio jack on the pi to output auditory feedback on payment.</br>
+
Sounds to be determined.
+
(Lottery Machine noises, Portal Sounds)
+
</td>
+
        <td>TBD</td>
+
        <td>No</td>
+
<td></td>
+
 
+
    </tr>
+
    <tr>
+
        <td>Motion Detector</td>
+
        <td>Make use of a motion detector as a type of Occupancy sensor for the display screen as well as feedback on when to enable/disable the rfid reader.</td>
+
        <td>TBD</td>
+
        <td>No</td>
+
<td></td>
+
    </tr>
+
</table>
+
 
+
API to interface to paypapal.
+
 
+
3D Printed mount for the RFID reader.
+
 
+
Pop Level Management.
+
 
+
Include a web cam to be hosted on live hacker spaces. "Live from the pop machine!"
+
 
+
== PI Pinout Assignments ==
+
 
+
In Progress.
+
<Table>
+
<tr>
+
<th>Assignment</th>
+
<th>Pin</th>
+
<th>Pin</th>
+
<th>Assignment</th>
+
</tr>
+
<tr>
+
<td>3v3 to LV on Logic Converter</td><td>1</td><td>2</td><td>5V to HV on logic converter</td>
+
</tr>
+
<tr>
+
<td></td><td>3</td><td>4</td><td>5V to + on Relay</td>
+
</tr>
+
<tr>
+
<td></td><td>5</td><td>6</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>7</td><td>8</td><td>GND to Logic Converter</td>
+
</tr>
+
<tr>
+
<td></td><td>9</td><td>10</td><td>To A1 on level shifter pass through to TX on RFID reader</td>
+
</tr>
+
<tr>
+
<td></td><td>11</td><td>12</td><td>To A2 on level shifter pass through to Enable on RFID reader</td>
+
</tr>
+
<tr>
+
<td></td><td>13</td><td>14</td><td>To S on Relay</td>
+
</tr>
+
<tr>
+
<td></td><td>15</td><td>16</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>17</td><td>18</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>19</td><td>20</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>21</td><td>22</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>23</td><td>24</td><td></td>
+
</tr>
+
<tr>
+
<td></td><td>25</td><td>26</td><td></td>
+
</tr>
+
</table>
+
 
+
== Database ==
+
 
+
Table: MemberAccount
+
<table>
+
<tr>
+
<th>Column</th>
+
<th>DataType</th>
+
<th>Description</th>
+
</tr>
+
<tr>
+
<td>Id</td>
+
<td>int</td>
+
<td>auto increment id for the account table</td>
+
</tr>
+
<tr>
+
<td>RFID</td>
+
<td>varchar</td>
+
<td>decimal value of the member's rfid</td>
+
</tr>
+
<tr>
+
<td>Account</td>
+
<td>int</td>
+
<td>account balance</td>
+
</tr>
+
<tr>
+
<td>Email</td>
+
<td>varchar</td>
+
<td>used to email users when their account is low</td>
+
</tr>
+
</table>
+
 
+
== Fritzing Schematic ==
+
Fritzing can be found at http://fritzing.org/download/
+
 
+
 
+
 
+
 
+
* [[File:popPi.zip]] popPi Fritzing schematic
+
 
+
 
+
https://github.com/adafruit/Fritzing-Library
+
 
+
== V1 ==
+
 
+
Version 1 is to basically setup the nessecary hardware to replace the coin mech and to use the RFID tags to debit from an account with little or no modification to the existing electro mechanical dispensing system.  Various options were considered but parts on hand and flexibility came together in the following:
+
 
+
*Raspberry Pi running Raspian 2013-09-25 (Render)
+
*Parallax Serial RFID Reader (Render)
+
*TTL level shifter for 5v RFID reader to talk to 3.3v Pi serial gpio pins (Colin)
+
*Solid state relay board (on order)
+
*HDMI to DVI Adapter (Render)
+
*Random LCD monitor from around the space
+
*Powered USB hub (Render)
+
 
+
 
+
Current goals: Users provide cash or paypal to director who adds to account for thier tag via web interface or 'credit' tags on the pi.
+
 
+
On scan, Pi checks database for balance.  If sufficient balance, deduct $1 and dispense product.  If insufficent balance, then display an unhappy message .  Once product is dispensed display the username and balance remaining for 15 seconds.  When 'idle' the screen will goto a slide show of comical and ficticious beverages (Duff, Slurm, Nukacola, etc)
+
 
+
Curent Status: In prototype:  Replacement plexiglass for front obtained, monitor stripped to bare minimum and test fit.  3d printed mount made for all computer hardware, first test on the actual pop machine with prototype Pi setup was a success!
+
 
+
<strike>RFID via GPIO working.  GPIO relay control working. Rough software proof of concept working.</strike>
+
 
+
To-Do:
+
*<strike>Clean machine mechanics.  Lube everything inside.  Test all mechanics</strike> Done, see Mechanics section
+
*Paypal integration (Noel?)
+
*Web Front End for manual account balance adjustment (Noel?)
+
*Custom graphics for sides, front (Karley, others)
+
*Custom made circut boards for sturdy integration
+
*3d print mounting brackets once layout confirmed
+
 
+
== V2 ==
+
 
+
Feature requests/ideas:
+
 
+
*Product remaining display
+
*Tie in with mastercontrol
+
*Ability to paypal monies directly to the pi to increase balance (or user added code via web interface)
+
*Random dispense mode (slot machine)
+
*Ability to dispense products at different prices (water $.25, beer $5)
+
*Consumption graphs
+
 
+
 
+
== Useful Links ==
+
 
+
[http://www.susa.net/wordpress/2012/06/raspberry-pi-relay-using-gpio/ http://www.susa.net/wordpress/2012/06/raspberry-pi-relay-using-gpio/]
+
 
+
[http://soda-machines.com/index.php?option=com_content&task=view&id=554&Itemid=14 http://soda-machines.com/index.php?option=com_content&task=view&id=554&Itemid=14]
+
 
+
[http://stackoverflow.com/questions/372885/how-do-i-connect-to-a-mysql-database-in-python http://stackoverflow.com/questions/372885/how-do-i-connect-to-a-mysql-database-in-python]
+
 
+
[http://www.sundh.com/blog/2013/09/connect-parallax-rfid-to-raspberry-pi/ http://www.sundh.com/blog/2013/09/connect-parallax-rfid-to-raspberry-pi/]
+
 
+
[http://zetcode.com/db/mysqlpython/ http://zetcode.com/db/mysqlpython/]
+
 
+
[http://openmicros.org/index.php/articles/94-ciseco-product-documentation/raspberry-pi/217-getting-started-with-raspberry-pi-gpio-and-python http://openmicros.org/index.php/articles/94-ciseco-product-documentation/raspberry-pi/217-getting-started-with-raspberry-pi-gpio-and-python]
+
 
+
[https://developer.paypal.com/ https://developer.paypal.com/]
+
 
+
[http://www.learn2crack.com/2013/10/setup-apache-web-server-php-mysql-raspberry-pi.html http://www.learn2crack.com/2013/10/setup-apache-web-server-php-mysql-raspberry-pi.html]
+
 
+
 
+
[http://www.adafruit.com/blog/2013/09/05/pool-table-accepts-bitcoin-with-help-from-raspberry-pi/ http://www.adafruit.com/blog/2013/09/05/pool-table-accepts-bitcoin-with-help-from-raspberry-pi/]
+
 
+
[http://www.vendoco.com/Documents/Super%20Stack%20Service_WHOLE.pdf http://www.vendoco.com/Documents/Super%20Stack%20Service_WHOLE.pdf]
+
 
+
[http://www.vendoco.com/Documents.aspx?ID=14 http://www.vendoco.com/Documents.aspx?ID=14]
+
 
+
[http://www.vendoco.com/Documents/Superstack%20Parts%20Manual.pdf http://www.vendoco.com/Documents/Superstack%20Parts%20Manual.pdf]
+
 
+
[http://soda-machines.com/discussions/index.php?PHPSESSID=iqh2425abe8gmpkv38e6j6i717&topic=13985.10 http://soda-machines.com/discussions/index.php?PHPSESSID=iqh2425abe8gmpkv38e6j6i717&topic=13985.10]
+
 
+
== Notes ==
+
 
+
Power is no problem.  The existing light ballast for the original backlight is 120v line that is perfectly placed to power everything.
+
 
+
There is lots of room to mount everything behind plexiglass on the outer door or against the inner door.  Approximatly 4" depth is available
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<strike> Need to also write up how to properly load product or else bad things happen </strike> The mechanics need to be advanced via a couple dispense attempts while empty until the 'bar' is in it's high spot.  Cans are started loading on top of this bar, and not the dispensing 'hopper'area below. Loading 8-10 cans, advancing two more cycles of dispensing will load the 'hopper' and it will be ready to go.  The machine will trigger 'empty' while there are still 6-8 cans in it.  This prevents having to go through this process again and leaves things 'primed' so one just has to stack more on top.  Do not empty the column completely unless absolutely nessecary.
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A video of the loading procedure will be made and uploaded to ensure it is done properly.
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A large number of vending machines use the same interface for the 'credit' function.  This project can be easily adapted to other models of vending machines.  Could be useful for other hackerspaces.
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== Code Repository ==
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Code is GPLv2 and available on Github at [https://github.com/renderlab/ENTS-Pop-Pi https://github.com/renderlab/ENTS-Pop-Pi]
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Revision as of 18:10, 12 April 2015

Back to list of Equipment

B2227L.jpg

Contents

Label

Metal Lathe http://ents.ca/index.php/Metal_Lathe

General

  • Owner/Loaner: ENTS
  • Make/Model: Craftex B2227L
  • Usability: Works
  • Contact: Raphael B.
  • Where: Metalworking bay
  • Certification Needed: Yes
  • Hackable: No
  • Estimated Value: $1300
  • Quantity: {{{Quantity}}}

Instructions

{{{Instructions}}}

Specifications

Motor: 3/4 HP, 110V, 8.8 Amps
Reversing Switch
Twin Belt Drives to 6 Speed (115 - 1626 RPM) Gearbox
18" Between Centers
Swing Over Bed: 10"
Swing Over Cross Slide: 5"
1" Spindle Bore
MT4 Spindle Taper
Number of Inch Threads: 20
Inch Thread: 8 - 56 TPI
Number of Metric Threads: 9
Metric Thread: 0.5 - 3.0 mm
Lead Screw: 7 TPI
Longitudinal Feed: 0.0025" - 0.005" per revolution
Tail Stock: MT2, 2" quill travel
Cross Slide: 4-1/2" Travel
Maximum Tool Size: 9/16"
Compound: 1" Travel
Max. Longitudinal Travel of Tool Slide: 2.75"

Accessories/Tooling

3-jaw self-centering chuck
Right hand / Left hand / Center indexable carbide turning tools
Boring bar, indexable carbide
HSS turning/facing, threading, and 45 deg chamfering tools
Parting blade, 3/32" x 1/2" HSS
Tailstock drill chuck, 1/2" capacity
MT2 dead center for tailstock
MT4 dead center for spindle
Center drills #3, #4, #5
Fractional drills 1/16"-1/2" by 64ths, Numbered drills #1-60, Letter drills A-Z
5 pc zero-flute 82 deg. countersinks
Assorted wrenches

Accessories/Tooling Wishlist

4-jaw independent chuck with adapter
29 pc fractional reamer set (1/16"-1/2" by 64ths)
14 pc over-under reamer set
25 pc metric reamer set

Equipment Settings

Spindle speed: Be mindful of what spindle speed the gearbox is set to. Different diameters and materials require different spindle speeds. Consult your Machinist's Handbook, the internet, or the handy (but woefully incomplete) chart on the wall behind the lathe for appropriate spindle speeds. For example, brass and aluminum can be turned much faster than steel or cast iron.

Safety

1. NEVER leave the key in the chuck. Never. Not even for one second. Never never never.
2. Do not pick up chips unless you are absolutely 100% certain they have cooled. Once they have cooled, let them cool some more. Even then, it is better to simply push them off with a brush or pick up the long stringy ones with a pair of pliers. Further, this should never be done with the machine running; long chips could snag on the part or chuck and start whipping around.
3. Parts should never protrude from the chuck jaws more than 3 times the diameter of the part without being supported by a dead or live center in the tailstock, or a steady rest (that we do not have yet). Parts shorter than their diameter should ideally be at least halfway in the chuck.
4. Disengage the feedscrew transmission when not using it, and of course the halfnut on the carriage.
5. Long, thin parts that extend out the back of the headstock should be sheathed inside a very loose-fitting fixed tube to prevent them from whipping around and bending over, essentially becoming a weedwhacker on steroids.
6. Regularly check that the chuck is firmly affixed to the spindle nose. There is a short allen key in the lathe tool box that will fit between the spindle nose and gearbox.
7a. When polishing with abrasive paper/strips, never let it wrap more than halfway around the part. It can snag on itself and pull your fingers into the part.
7b. If polishing the inside diameter, never never never insert your finger in the hole. Wrap the abrasive around a small wood or plastic dowel that is significantly smaller than the ID of the hole.
8. Verify the spindle speed is appropriate for the diameter and material you are working on.
9. No long hair! NO LONG HAIR! Not even a ponytail is acceptable. If you have long hair, put it up under a hat or in a bun or something. Tying it back is NOT acceptable. We would rather see you looking silly than looking dead. If you don't believe me, do a google image search for "lathe accident" and you will see why. No loose long sleeve shirts, no dangling drawstrings on hooded sweaters, no loose jewelry/rings, no headphones, no neckties. If you are observed with any of these while operating this machinery, you will be asked to stop immediately.
10. Safety glasses are always a very good idea, however, if they fog up and obstruct your vision, stop what you are doing and get a different pair. It's still extremely dangerous not being able to see, even if your eyes are protected.
11. Do not wear gloves while working on the lathe. They can snag and pull you in.

Known Problems

The quill in the tailstock is not captive. If you crank the feed too much, it WILL disengage from the feedscrew, possibly screwing up your work. Be cautious of this. If you can see the keyway machined in the top of the quill, it's starting to extend too far. Stop your work, retract the quill, and reposition the tailstock closer to the work. This is a design flaw, not a failure of the equipment. We will (eventually) take steps to ensure the quill is captive, probably by machining a groove in the bottom of the quill and adding a set screw, as is standard on many lathes.

Future Ideas

Add a chip pan below the lathe to catch aluminum (and only aluminum, do not cross-contaminate!) for recovery and recycling in the foundry.

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