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 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 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 dissapear into the cube it was cut from when it is reinserted:
*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>


[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=
=="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]
==EDM wire==
*$40 for 6 lb - [https://www.ebay.com/i/190868306217?chn=ps]


=YouTube=
=Internal Links=
*DIY, cuts 1" stainless at 2 mm/min - [https://www.youtube.com/watch?v=mJHlV_NICsE]. Howto - [https://www.youtube.com/watch?v=H4KI0SK6V1Y]
*[[Open Source EDM Drill]]
=Resources=
*There are many EDM DIY builds out there.
*There's a book on DIY EDM machines - [http://www.homebuiltedmmachines.com/]. Youtube - [https://www.youtube.com/watch?v=hhqdXU846xE]. Books and circuit boards are available - [http://www.homebuiltedmmachines.com/purchasing-books-and-starter-kits/]
 
=See Also=
*[[Open Source Die-Sink EDM Machine]]
*[[Open Source Die-Sink EDM Machine]]
*[[Open Source 3 Axis Wire-Cut EDM Machine]]
*[[Open Source 3 Axis Wire-Cut EDM Machine]]
*[[Open Source Robotic Arm Wire Cut EDM Machine]]
*[[Open Source Robotic Arm Wire Cut EDM Machine]]


=Useful Links=
=External Links=
*[https://en.wikipedia.org/wiki/Electrical_discharge_machining Wikipeia Page On 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]
*[https://www.youtube.com/watch?v=QvhyTGjxNZ4 A Video by the YouTube Channel "NYC CNC" Titled "What is EDM? A tour at Spectre EDM!" ]


=Builds=
[[Category: Multimachine]]
*MIT Machines That Make - [http://mtm.cba.mit.edu/machines/dwedm/index.html]

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>

Source

Existing Open Source Designs

"AndysMachines"

YouTube #1

  • DIY, cuts 1" stainless at 2 mm/min - [5] (Dead Link) How to - [6] (Dead Link)

Book on DIY EDM machines

"Homebuilt EDM Machines"

Books and Starter Kits

MIT Design?

  • MIT Machines That Make - [9]

Basic Design

BOM

EDM wire

Internal Links

External Links