Z-stop save not always working?

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Today I had time to start setting up a small job I want to try to test out some new 1/8" bits and I noticed something. I set up (retract/extend/apply tension), then put my z up enough to change bits, did the bit change, then moved the bit down to the workpiece and set Z home. I then went to the first tab to check machine zero value and it was like 40mm. I measured the distance off 0 and noted about a 10mm difference (it was at 30 from the bottom along the lead screw.

I wonder if the machine Z is not getting saved properly and that might be causing issues? I didn’t run my z all the way down or up in this scenario, so it was using whatever I had set before. It seems to me that this may be causing accuracy or “15mm” issues?

Just a thought. I’m not going ahead with any cuts today as I’m out of time and its fricking hot in the garage anyway.

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OK, so I did end up having time and got a couple of test box sides cut… I did notice that somehow my yaml was wrong and I had the “stock numbers” in when I did the above, so now I wonder if there was some reset that happened and wiped things all together. Once I had my old maslow.yaml numbers in there and had zeroed things once, the Z-Zero stayed consistent over a few power cycles.

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I’ve also found that the Z-Stop value goes missing. Not sure about why, but resets could be a possibility

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