EDM: Difference between revisions
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*10x slower than waterjet - [https://advancedmanufacturing.org/waterjet-vs-edm/] | *10x slower than waterjet - [https://advancedmanufacturing.org/waterjet-vs-edm/] | ||
*Waterjet appears to be much better for the speed and cost. But EDM advantage is 10x more precise - [http://info.icee.co.uk/blog/waterjet-cutting-vs-edm] | *Waterjet appears to be much better for the speed and cost. But EDM advantage is 10x more precise - [http://info.icee.co.uk/blog/waterjet-cutting-vs-edm] | ||
=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: | |||
<blockquote class="imgur-embed-pub" lang="en" data-id="DAs75ze"><a href="//imgur.com/DAs75ze">THE FINAL FORM</a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script> | |||
[https://www.reddit.com/r/oddlysatisfying/comments/5euinh/an_impossibly_perfect_fit/ Source] | |||
=BOM= | =BOM= | ||
Revision as of 18:19, 14 April 2018
Electric Discharge Machining. It is simply a spark between a wire and a workpiece. 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>
BOM
- EDM wire - $40 for 6 lb - [5]
YouTube
Resources
- There are many EDM DIY builds out there.
- There's a book on DIY EDM machines - [8]. Youtube - [9]. Books and circuit boards are available - [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