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Gerald jumping on y-axis on faster cuts. #1055
During Maker Night last night, a complex cut with some cuts halfway down the bed it was noticed that movement on the y-axis jumped by over 100mm on a fast movement between objects. This happened twice on two separate cuts. Sean also noticed a noise of the stepper motor racing, suggesting that the belts were slipping.
It appears that the belts on the y-axis are quite worn. Gerald still works, but I expect this issue to become more common as the belts deteriorate.
The belts on the y-axis have been planned to be replaced on the last laser maintenance session, but other jobs took priority on the day. I plan though to come in on Saturday to replace these belts and check a couple more of some noted issues with Gerald.
Both drive belts have now been replaced on the y-axis of Gerald with help from @Thingomy. This was not a small task, as all pulleys were thoroughly cleaned as well. Also, a large number of the mounting bolts for the gantry arm were loose, so these have all been tightened up.
There were still some issues though on the y-axis jumping on some of the larger cuts, so @Thingomy found a setting on the options for the laser software which reduced the maximum speed movements from 300mm/sec to 250mm/sec. This appears to have resolved the issue.