DIY mostly printed desktop Wire EDM machine

[G-EDM]

Hi, maybe some people are interested in DIY Sinker and Wire EDM. I'm working on the G-EDM which includes a mostly printed CNC router, a DIY pulsegenerator and a custom motion control firmware that is able to move lines back in the line history to retract on short circuits.

It runs on an ESP32 and samples a current feedback with I2S ADC at close to 1MSps. The feedback is optically isolated through a linear optocoupler. PWM to power the drive the gate driver circuit is also isolated. Works pretty well so far.

The wire module had a redesign I am currently printing and building.

A little preview for those interested can be found on Youtube:

[G-EDM]

Small update:




Images show 30mm mild steel and 2mm stainless steel.

[moffy]

A beautiful looking project, wire EDM is relatively simple in principle, a wire an electric arc and a cutting medium, but there is an awful lot of detail to be overcome to get it working successfully, congrats.

[G-EDM]

Thanks.

If it comes down to all the details I honestly would not know where to start. There where just so many of them. 
All in all software was the biggest pain to do.

[wobbly]

That is very impressive.  Looks like a bought one as Dave would say . Great work