Transform Your Defective Creality 3D Printer into an EDM Machine

Innovation in Manufacturing

EDM (Electrical Discharge Machining) is a specialized manufacturing process that is often costly, but it is becoming more accessible thanks to the EnderSpark solution. This innovation addresses two major issues:

The first challenge is performing CNC operations on difficult-to-process materials, such as hardened metals, without breaking the bank. The second issue is what to do with old Creality Ender 3D printers that are lying unused in your garage.

Transforming an affordable 3D printer into an EDM machine is possible by adding a 51:1 gearbox between the NEMA 17 motors and the drive pulleys, which provides increased positioning accuracy. The X and Y axes have been reinforced with MGN12H linear rails, capable of supporting the weight of a water tank. The main motor is equipped with a ruby nozzle, surrounded by a 3D cooling system.

Regarding electronics, the project utilizes the original circuits of the Ender printer, with an additional stage of power drivers to send electrical pulses of up to 10A through the wire used. This generates the sparks needed as the wire advances into the conductive workpiece material.

The project employs G-code, and a custom plugin for Fusion 360 will convert the toolpaths extracted into G commands, facilitating their usage on the machine. In the future, the implementation of closed-loop control of pulse energy and adjustment of feed rates is being considered.

If this sounds familiar, you are right—there are already several DIY EDM machine projects out there, but EnderSpark brings a unique approach by recycling 3D printers.