Hour and 30 minute cycle and the X axis skips mid way through.
Sucks. Looks like it happened twice actually. Are you looking for tips to fix this or just venting?
Both. Good eye on seeing it happened twice, didn’t notice that. What do you think caused it? seems like it moved too much to be missing steps.
You’re definitely missing steps in one way or another.
In this case I’d check the usual suspects:
- double check your belts. Make sure there’s no slack in the belt. It should be taught but not stretched. There’s a danger in overtightening as well.
- it’s possible that the actual pulley on your stepper shaft is loose. Check that the grub screw is holding the pulley securely against the flat portion of the shaft.
- It’s also possible that if your speeds are a little too high that it’s stalling occassionally but not consistently. I think the first two are more likely.
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I recommend Loctite 222 for everything under 1/4" or 6mm. I ruined an RF shield in a laptop with 243.
*Frantically googling suppliers of Kangaroo leather in North America 
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