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I concede.... it won... it isn't going to work, I have re-grounded everything in a star configuration and while it has helped it has not made it fool proof to where it doesn't crash the mill. I have...

I can ask around to see of someone i know, knows someone who has a spectrum analyzer, worth a try. I have tried using two different lines to power the PP256, one is the outlet i installed for it and...

ok, I added more grounds all bare copper stranded wire in a star configuration bolted to each component and wrapped tin foil around the torch lead and grounded it only on the cart end. this helped...

aluminum foil will be tried, have to go get some more, didn't have enough to cover the whole thing.... will report back as soon as i try it!

Thanks and any other suggestions I am happy to try as...

ok,

I took your advise and put ferrite clamps on every wire going into the control cabinet to include:

each stepper motor cable, the Parallel port cable both ends, power cords for both the PC...

I have been wrestling with HF interference on my PP256 and I have grounded everything very well, it wreaks havoc in my cnc equipment and has created alot of cost in trashed work pieces when this...