EDM: Difference between revisions
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=Basics= | =Basics= | ||
*Stands for Electric Discharge Machining. | *Stands for Electric Discharge Machining. | ||
*It is simply a spark between an | *It is simply a spark between an electrode/wire (Depending on which machine variant is used) and a workpiece that are separated 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. | *It does super precise cutting and small hole drilling in electrically-conductive materials. | ||
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=Examples of EDM Cut Objects= | =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 | *The following was cut using a high precision Wire-Cut EDM Device. The Cut is so precise that the shape can seem to disappear 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> | <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> | ||
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=Existing Open Source Designs= | =Existing Open Source Designs= | ||
=="AndysMachines"== | =="AndysMachines"== | ||
*[https://www.youtube.com/watch?v=MZm-mvxa2qo A Video by the | *[https://www.youtube.com/watch?v=MZm-mvxa2qo A Video by the YouTube Channel "Andysmachines" Titled "Building an EDM machine. Part 1-some experiments" ] | ||
== | ==YouTube #1== | ||
*DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE] | *DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE] How to - [https://www.youtube.com/watch?v=H4KI0SK6V1Y] | ||
==Book on DIY EDM machines== | ==Book on DIY EDM machines== | ||
*[http://www.homebuiltedmmachines.com/] | *[http://www.homebuiltedmmachines.com/] | ||
== | ==YouTube #2== | ||
*[https://www.youtube.com/watch?v=hhqdXU846xE] | *[https://www.youtube.com/watch?v=hhqdXU846xE] | ||
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=External Links= | =External Links= | ||
*[https://en.wikipedia.org/wiki/Electrical_discharge_machining | *[https://en.wikipedia.org/wiki/Electrical_discharge_machining Wikipedia Page On Electrical Discharge Machining] | ||
* | *YouTube Video: DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE]. How to - [https://www.youtube.com/watch?v=H4KI0SK6V1Y] | ||
Revision as of 22:45, 9 January 2022
Basics
- Stands for Electric Discharge Machining.
- It is simply a spark between an electrode/wire (Depending on which machine variant is used) and a workpiece that are separated 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 disappear 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
"AndysMachines"
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]
Internal Links
- Open Source EDM Drill
- Open Source Die-Sink EDM Machine
- Open Source 3 Axis Wire-Cut EDM Machine
- Open Source Robotic Arm Wire Cut EDM Machine
External Links
- Wikipedia Page On Electrical Discharge Machining
- YouTube Video: DIY, cuts 1" stainless at 2 mm/min - [12]. How to - [13]