Missing material when slicing a curved/chamfer hole
Hi!
I am printing a hole on a curved surface (the model is a smartphone case, and this hole is for the volume button), using PETG on a Prusa Mini+, Prusa Slicer 2.8.1. I am a beginner as well 🙂
The model looks good in Prusa Slicer, but when I try to slice it, the hole gets wider, with some glitches around the border. For example, instead of printing a small bridge, the printer has to print a tiny line in midair! 🙂
What is the cause of this problem? Are there any settings I can try to change? I tried reducing the layer height, but it gets worse.
Here are the pictures. Thanks in advance!
RE: Missing material when slicing a curved/chamfer hole
the hole has very fine edges,
slicers will only resolve features equal to, or thicker than the minimum extrusion width
for this reason, the hole is rendered oversize.
if you could reduce the size of the chamfer around these holes, to include a small section of non chamfered hole, you would get better results
if you can provide a copy of your Project file, including the model, we may be able to help more.
save the project using File>Save Project as> option.
then zip compress the project fila, and attach the zip file to the next post.
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Missing material when slicing a curved/chamfer hole
Common issue when using Arachne with the default settings on thin edges like that. If you cant modify the geometry as Joan suggests then Switch to Classic slicing mode and you should see an immediate improvement in those areas (may get worse in others though, depends on the model).
You can also experiment with adjusting the Arachne settings themselves. They are not one size fits all.
There are previous posts in this very forum about it and many raised issues on the Prusa Slicer github repository.
RE: Missing material when slicing a curved/chamfer hole
Thanks for the suggestions! I modified the chamfer of the STL file using Blender (it took me quite some time, as I am not familiar with Blender) and solved the issue 🙂
RE: Missing material when slicing a curved/chamfer hole
that's good news,
Happy Printing,
Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK