I just snapped a bit in the middle of a job. I paused the program. Can I jog the machine over and change the bit and then just restart the program, picking up where it left off or will I need to start over?
Start over is the only option I know.
Unless you want to edit the NC code.
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Thanks. That’s what I ended up doing…with a VERY careful re-zeroing, it doesn’t appear that you can see any difference with the first pass that was run before the bit broke.
The machine should have returned to the original origin if you did not turn the machine off.
I don’t think there is any way to avoid doing a homing cycle when you stop a program. The prox switches have some level of precision, and I have seen visible differences between homing cycles.
CM treats every program stop as if it was an emergency, and that’s just not how things work, out here in the real world.
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When a bit breaks there is a lot of power used. That means that the stepper motors possibly skip one or some steps. That means very likely the Zeros are changed. I recommend to re-initialize and re-zero. For at least that purpose a precise, reproducible zeoring is strongly recommended at the beginning of each stock.
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True but we could avoid faulty homing cycles by adding a simple physical actuating switch with a high level of accuracy to the opposite side of each axis and if you were worried about repeatability it could be a simple checkbox that would more than double the homing time in exchange for a perfect kept zero every time. Then people who are concerned finally can stop worrying and wasting hours in exchange for what 20 seconds and people who want to dismiss it could just completely skip over the feature. Assuming there aren’t multiple revs of the 5 pro’s extrusions it seems like the LARGEST missing feature is repeatability.
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