There could be 2 reasons:
A) BambuStudio has a hickup - try to close and restart BS to see if it still behave the same.
B) If printing with stock-presets it could be that the line width for perimeters leaves some parts of the object unprintable. The fastest way to identify this is change from ‘classic’ to ‘Arachne’ and in the preview check for line width. If it is less than the defined one in the preset, the slicer will not create those for printing.
Regarding the gap between the support in the file - did you slice it with the defined 0.2 layer height?
BambuStudio had no hickup I’ve tried it several times, even on 2 machines.
I’m using version 1.4.0.18
I’m using the only profile available for my P1P, the 0.2 mm one, and I’ve not changed anything. I’ve tried it after a FRESH install
In Bambu Studio, I do not find the parameters you refer to: “line width for perimeters” or “change from ‘classic’ to ‘Arachne’”
For me this STL is slicing fine by using a smaller line width.
Using the default 0.12 layer height profile and only changing first layer, outer wall and inner wall to 0.38mm already works.
You might need to finetune those settings to make the Headbangers strong enough. I have not printed them. But might do this later on
This can happen when your model is not manifold meaning there is somewhere a hole or opening.
Having a hole in your model results in the model not being competely “closed” so the slicer will not slice certain parts.
The problem here is the model, not the slicer. (af far as I can tell)
Share your model, and we’ll try and slice it ourselves to see if we have different results.
The model is fine other than the included support for the middle spring being two 0.4mm thick walls which without the detect thin walls option the slicer thinks are too thin to print with 0.4mm nozzle default profiles. It slices OK using a 0.2mm nozzle profile.