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Powercore? Never heard of her.

A project log for G-EDM

The G-EDM is an electrical discharge machine that supports sinker EDM, EDM engraving, EDM drilling and Wire EDM operations. #Drahterodieren

gedm-devgedm-dev 04/01/2026 at 03:160 Comments

People keep contacting me asking how the G-EDM compares against the PowerCore from Rack Robotics.

I'm sorry to be the one telling them, but you can't compare those concepts. I haven't seen any valid cuts made by users from a PowerCore at all. It does not provide a motion control firmware and even worse the v2 AND the v3 seem to have a design issue.


Many v2 users reported issues with their devices getting defective. This flaw was so significant that they made the v3. Now people with a PowerCore v3 show up reporting defective devices too. 


Please don't come at me asking how it compares against that. G-EDM users measure cutting speed in mm/min and not in arcgenerators/mm.

G-EDM is a working design with prove-of-work by multiple different people and not a single failure of the electronics since the early days. It is possible to destroy the Pulseboard by using an unregulated PSU as input but the docs clearly say to run it with a DPM/DPH which the boards are designed for. Userfaults are not G-EDM faults. 

I would buy a PowerCore once at least v5 or v6 is available. But with the G-EDM at half the pricetag and triple the features there is no reason for it.

Hope this clarifies that question as I'm not willing to dive deeper into this topic.

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