I suddenly have a new issue with my X1 Carbon. I am printing esun PETG. Never had problem with this before. Strange thing is that it does this every time at exactly the same print height where the product changes from a rectangular shape with 30% infill to a hollow structure with the same infill. The nozzle brushed into the product, dislocates it and spaghetti follows.
Which infill pattern are you using?
The default grid crosses lines on the same layer and creates little bumps that stick up.
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I am using Gyroid. I think that is the strongest.
Actually having the same thing. Only PETG, for some reason. Happened 3 times on a rather tall model and same place each time.
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The point where it fails… IS that a long thin overhang?
What is probably happening is that your fillament is curling up because of cooling issues. Now your model is higher than the nozzle and the nozzle will hit it and break loose from the buildplate.
Fix the cooling issue to prevent warping and it will complete the print.
No there is no overhang or bridgeing on the model at all
Providing the printer is working as it should, the only explanation is that the model is too high… Go see what happens to the model at the point where it goes wrong.
I have had this issue with the speed benchy when it bridges the arches of the roof… Easy to spot what goes wrong if it happens at the same place each time.
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I just had an amazing success with my curling bump problem. Testing is still in progress, but turning off z hop seems to have fixed it.
Before and after
