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| RussellT:
I'm surprised that you could measure the voltage if it's static build up, static is normally very high voltages but tiny charge or current. I think the danger from static is normally sparks in flammable environments. I wonder if your speed controller negative is drifting away from neutral? Be careful :zap: Russell |
| shipto:
--- Quote from: RussellT on March 27, 2025, 06:02:28 AM ---I'm surprised that you could measure the voltage if it's static build up, static is normally very high voltages but tiny charge or current. I think the danger from static is normally sparks in flammable environments. I wonder if your speed controller negative is drifting away from neutral? Be careful :zap: Russell --- End quote --- I am not 100% certain but as the only connections are going to the motor and I have tested that there is nothing connected to the body in any way its the only thing that made any sense to me. If there was a fault in the controller the power should still not get to the body I think but it wont hurt to earth it either way. |
| vtsteam:
My understanding (maybe faulty, itself!) -- these solid state DC power supplies can (if faulty) pass through line voltage, unlike the old transformer/bridge rectifier/capacitor DC types which isolated the output. |
| shipto:
This is the next bit which apart from holding lathe tools etc will hopefully help me make the accurate 40 degree taper in the end of the spindle. |
| shipto:
Its a bit difficult getting a decent picture but that seems ok. I guess the next thing is to make an arbor and make sure, if its not far away I can lap it I think. |
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