GregValiant 1,342
Enabling Z-Hops at .2 to .5 will fix it but the noise might be a symptom and not the real problem.
If you have calibrated your E-steps then I would leave the flow numbers alone.
If there is sloppiness in your Z system on the printer, then it won't increment upwards consistently. That can cause the rubbing as well. Make sure your Z couplers are tight and they don't rub on the Z motor housings. Some dry lubricant on the threaded rods can help. Make sure your Z trolley wheels are adjusted correctly. You shouldn't be able to wiggle the ends of the X gantry up and down. You want that gantry to be nice and rigid but it should move smoothly up and down.
If the print head has looseness in it's trolley wheels then it can wobble and cause the problem as well. Since yours is doing it up higher then the Z system could likely use an inspection and maybe some attention.
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Big_Ron 1
did you try changing you Z hop?
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