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Nozzle hitting infill on travel


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Posted · Nozzle hitting infill on travel

In theory - since the Z height doesn't change, the nozzle cannot hit the infill (or anything else).  In reality, it does happen and in severe cases it can be enough to dislodge the print from the bed.  For the most part it's simply annoying.  I "have a feeling" that it's related to the printer and/or material but I have no actual evidence for that.


You can check your hot end and make sure it is secure, and check that your X trolley wheels are adjusted correctly and your Z system is working correctly.

If you determine that those are fine, then you can enable "Z-Hop when retracted" (Travel settings) at around 0.5mm to insure that when a retraction occurs prior to a travel move the print head moves up and avoids the infill during the travel.  The settings "Max Comb Distance with No Retract", "Avoid printed parts when traveling", and a couple of others may be adjusted and might make a difference.  

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