No matter how many times I use the Z-probe …
Every time I press the “Probe” button… I hold my breath!
EVERY.TIME!
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Used my multimeter to check continuity on the probe using the audible beep. Found that the big clamp for the collet nut didn’t pass current all the time, probably due to the black finish on it. Replaced it with an alligator clip that clips directly on the bit and also put a higher quality banana plug on the other end (stock one was rather loose). Works 100% of the time now.
Which UGS version do you use?