EDM: Difference between revisions
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=About= | =About= | ||
*Good explanation + Demo in [https://www.youtube.com/watch?v=JtKi8lNSqvw&list=PLXYLzZ3XzIbgvks9zUU_J940s-cobHxZD&index=4 this video] at 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. | ||
Revision as of 18:03, 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]
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