Note from PCBWay: This page only includes the motionboard. To build the G-EDM it also requires the pulseboard.

The EVOIII board is the new and recommended board that has pulse- and sennsing unit integrated on a single PCB:

https://www.pcbway.com/project/shareproject/G_EDM_EVOIII_board_Low_budget_DIY_Wire_EDM_machine_482d5b7a.html

Working with metals at home was always a struggle for makers and DIY people. It normally needs heavy machinery, is loud and some materials like hardened steel can become very challenging.

But there is a solution to all those problems: Electrical Discharge Machining or short EDM.

As the name suggests EDM cuts materials by generating a large amount of tiny sparks to erode the electrode along the path into the workpiece.

There are two main types of EDM processing. Sinker/RAM EDM and wire EDM. The G-EDM supports both of them.

Sinker EDM is a single axis process with a static electrode that slowly sinks into the metal creating pockets. A modification of sinker EDM is Deep Hole Drilling where a small rod-type electrode rotates and drills a hole.

This process is nothing new and the industry is using it since a long time but it was never really affordable for normal Hobbyists with prices up to multiple thousand dollars for entry level machines.

Providing an affordable, reliable and highly modular EDM machine for small money to every maker is the goal of the G-EDM. It uses easily available parts and follows a mostly 3D printed concept wherever possible to decrease costs and increase flexibility.

The software provides very unique EDM specific features like a build in oscilloscope and negative feed and runs on a single ESP32.

The project is very extensive and there is still a lot to do. All files necessary to build a G-EDM are available on github but it lacks documentation and is still a work-in-progress.

Please visit the Github to get all the recent files and updates (The BOM for the Router itself is still unfinished)

G-EDM EVOII CNC Router, Wire extension, Schematics, BOMs and Gerber files can be found here:

https://github.com/G-EDM/GEDM-EVO2-CNC/tree/main/files

Software can be found here:

https://github.com/G-EDM/G-RBLevo

https://www.youtube.com/@G-EDM