EDM: Difference between revisions
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==Books and Starter Kits== | ==Books and Starter Kits== | ||
*[http://www.homebuiltedmmachines.com/purchasing-books-and-starter-kits/] | *[http://www.homebuiltedmmachines.com/purchasing-books-and-starter-kits/] | ||
==MIT Design?== | |||
*MIT Machines That Make - [http://mtm.cba.mit.edu/machines/dwedm/index.html] | |||
=Basic Design= | =Basic Design= | ||
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*[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] | *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] | ||
Revision as of 13:53, 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
MIT Design?
- MIT Machines That Make - [10]
Basic Design
BOM
- EDM wire - $40 for 6 lb - [11]
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 - [12]. Howto - [13]