EDM: Difference between revisions
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Electric Discharge Machining. It is simply a spark between | =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= | =About= | ||
*Good explanation + Demo in [https://www.youtube.com/watch?v=JtKi8lNSqvw&list=PLXYLzZ3XzIbgvks9zUU_J940s-cobHxZD&index=4 this video] at [https://youtu.be/JtKi8lNSqvw?t=13m26s 13:26] | |||
*Uses 0.25 mm brass wire for cutting, Mcmaster has 0.5 mm wire - $30/lb - [https://www.mcmaster.com/#8864k71/=1ceszx4] | *Uses 0.25 mm brass wire for cutting, Mcmaster has 0.5 mm wire - $30/lb - [https://www.mcmaster.com/#8864k71/=1ceszx4] | ||
*Voltage is 50-300V. Current for 1" cut below is 35A. | *Voltage is 50-300V. Current for 1" cut below is 35A. | ||
| Line 7: | Line 11: | ||
*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 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> | |||
[https://www.reddit.com/r/oddlysatisfying/comments/5euinh/an_impossibly_perfect_fit/ Source] | |||
=Existing Open Source Designs= | |||
=="AndysMachines"== | |||
*[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] (Dead Link) How to - [https://www.youtube.com/watch?v=H4KI0SK6V1Y] (Dead Link) | |||
==Book on DIY EDM machines== | |||
*[http://www.homebuiltedmmachines.com/] | |||
=="Homebuilt EDM Machines"== | |||
*[https://www.youtube.com/watch?v=hhqdXU846xE A Video by the YouTube Channel "Homebuilt EDM Machines" Titled "EDM - Stable & Unstable burn examples" ] | |||
==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= | |||
* | |||
=BOM= | =BOM= | ||
==EDM wire== | |||
*$40 for 6 lb - [https://www.ebay.com/i/190868306217?chn=ps] | |||
=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= | |||
*[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] | |||
*[https://www.youtube.com/watch?v=QvhyTGjxNZ4 A Video by the YouTube Channel "NYC CNC" Titled "What is EDM? A tour at Spectre EDM!" ] | |||
[[Category: Multimachine]] | |||
Latest revision as of 01:10, 10 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
"Homebuilt EDM Machines"
Books and Starter Kits
MIT Design?
- MIT Machines That Make - [9]
Basic Design
BOM
EDM wire
- $40 for 6 lb - [10]
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 - [11]. How to - [12]
- A Video by the YouTube Channel "NYC CNC" Titled "What is EDM? A tour at Spectre EDM!"