EDM: Difference between revisions
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[https://www.reddit.com/r/oddlysatisfying/comments/5euinh/an_impossibly_perfect_fit/ Source] | [https://www.reddit.com/r/oddlysatisfying/comments/5euinh/an_impossibly_perfect_fit/ Source] | ||
=Existing Open Source Designs= | |||
==Youtube #1== | |||
*DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE] Howto - [https://www.youtube.com/watch?v=H4KI0SK6V1Y] | |||
==Book on DIY EDM machines== | |||
*[http://www.homebuiltedmmachines.com/] | |||
==Youtube #2== | |||
*[https://www.youtube.com/watch?v=hhqdXU846xE] | |||
==Books and Starter Kits== | |||
*[http://www.homebuiltedmmachines.com/purchasing-books-and-starter-kits/] | |||
=Basic Design= | |||
* | |||
=BOM= | =BOM= | ||
*EDM wire - $40 for 6 lb - [https://www.ebay.com/i/190868306217?chn=ps] | *EDM wire - $40 for 6 lb - [https://www.ebay.com/i/190868306217?chn=ps] | ||
=See Also= | =See Also= | ||
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=Useful Links= | =Useful Links= | ||
*[https://en.wikipedia.org/wiki/Electrical_discharge_machining Wikipeia Page On Electrical Discharge Machining] | *[https://en.wikipedia.org/wiki/Electrical_discharge_machining Wikipeia Page On Electrical Discharge Machining] | ||
*Youtube Vidoe: DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE]. Howto - [https://www.youtube.com/watch?v=H4KI0SK6V1Y] | |||
=Builds= | =Builds= | ||
*MIT Machines That Make - [http://mtm.cba.mit.edu/machines/dwedm/index.html] | *MIT Machines That Make - [http://mtm.cba.mit.edu/machines/dwedm/index.html] | ||
Revision as of 13:51, 4 June 2019
Basics
- Stands for Electric Discharge Machining.
- It is simply a spark between an elecrtode/wire (Depending on which machine variant is used) and a workpiece that are seperated by a dielectric fluid (Usually high purity water (Double Distilled or Deionized) or oil)
- It does super precise cutting and small hole drilling in electrically-conductive materials.
About
- Good explanation + Demo in this video at 13:26
- Uses 0.25 mm brass wire for cutting, Mcmaster has 0.5 mm wire - $30/lb - [1]
- Voltage is 50-300V. Current for 1" cut below is 35A.
- 1 pound of wire used per hour to cut a 1/2" hole in a 3" piece of hard metal. - [2]. that is $5 in wire cost. About $1 per inch of metal.
- 10x slower than waterjet - [3]
- Waterjet appears to be much better for the speed and cost. But EDM advantage is 10x more precise - [4]
Examples of EDM Cut Objects
- The following was cut using a high precision Wire-Cut EDM Device. The Cut is so precise that the shape can seem to dissapear into the cube it was cut from when it is reinserted:
<a href="//imgur.com/DAs75ze">THE FINAL FORM</a>
<script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>
Existing Open Source Designs
Youtube #1
Book on DIY EDM machines
Youtube #2
Books and Starter Kits
Basic Design
BOM
- EDM wire - $40 for 6 lb - [10]
See Also
- Open Source Die-Sink EDM Machine
- Open Source 3 Axis Wire-Cut EDM Machine
- Open Source Robotic Arm Wire Cut EDM Machine
Useful Links
- Wikipeia Page On Electrical Discharge Machining
- Youtube Vidoe: DIY, cuts 1" stainless at 2 mm/min - [11]. Howto - [12]
Builds
- MIT Machines That Make - [13]