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But what about the Powercore?

A project log for G-EDM

The G-EDM is a 4in1 electrical discharge machine that supports sinker EDM, EDM engraving, EDM drilling and Wire EDM operations.

gedm-devgedm-dev 10/05/2023 at 04:530 Comments

This log will be a little about the Powercore from rack robotics. I've heard a lot about it and people keep contacting me about it.

After looking into it a little I came to the conclusion that it is outdated technology.

Back in the days most EDM spark generators used some kind of power resistor to limit the current. But this concept generates a huge amount of heat and is just wasted energy.

My first pulse generators used power resistors too until I changed to a switch mode power supply.

It is somehow sad that they seem to not provide a lot of information about the specs of this product. The available information claim that the switching frequency is about 2khz which would be very slow if this is the max speed. On the G-EDM the lowest frequency I use is about 5khz and my personal sweet spot frequency is between 10-30khz.

Since it is only a pulsegenerator without any motion controller yet there is not much I can say about it. There are no customer videos available. After selling a huge amount one should assume some videos to pop up that are not related to the team of the product. This may speak for itself. But I don't want to make it look bad. Without a motion controller even the best pulse generator is useless.

But there are good news too for the powercore fans. After watching the channel from rack robotics there seems to be a great interest in ESP32 Motionboards with TMC2209 drivers in the last days. That is super cool since that is exactly what the G-EDM uses. So I know it is a good choice.


I'm confident that they will be able to come up with the promised wire EDM build and maybe it will run exactly as good as the G-EDM. Wouldn't that be awesome?

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