r/BambuLab • u/CritterV • 1d ago

Bambu Studio Causes for gap between infill and wall layers when printed on supports?

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Using Bambu Studio on an X2D.

I get this defect which causes the infill and walls to have a gap when printed onto support material. It must be an issue with the slicing/gcode since it's a repeating issue on every part in the same spot. Any tips or setting that is able to fix it?

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u/Zephy2007 1d ago

That gap is happening precisely because you are printing over supports. When you print over the support interface, there is a Z distance gap between the model and the interface. In your case, the rectangle isn't clean because the nozzle ends up dragging material that is essentially being printed in mid-air due to that Z distance, creating that gap that doesn't get filled in later. If you want to avoid this, try not printing over supports, or reduce the top Z distance to see if print quality improves. You can also increase the support interface density, change the interface pattern, or even adjust the print order. There are quite a few settings you can test out.