EBo wrote: > > Have you tried any ridged tapping in aluminum? Might break a few taps, > but it would be worth testing out and demonstrating. > > An easy check before risking any tooling is to do the operation in air. Possibly illuminate the tap with a flashlight to eliminate perceived strobe effects from fluorescent lights. You could even put a screw of the right thread in the spindle. If the thread appears to be motionless during the spindle synch part, then the Z movement is matching the thread pitch pretty well. I did this a few times before risking an expensive tap to be sure the thing was really working correctly.
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