Changing Infill/perimeters overlap mid-print
I am seeking a method for changing the Infill/perimeters overlap setting mid-print. I did not see a way to do this through a mock filament change as the Infill/perimeters overlap setting is in Print Settings, not Filaments. I am using a CORE One +, single extruder, and the PrusaSlicer silcer.
For context: I am working on a translucent print with clear PMMA. The current issue is that as the print progresses air pockets begin to form where the infill and perimeter meet. Increasing the infill and perimeter overlap delays the onset of the air pockets. With the last overlap setting that I tried there were still air pockets forming by the end of the print and the start of the print was bulging at the seam from overextrusion.
An alternative approach that I haven't tried is to see if changing the extrusion multiplier between filament changes counteracts the bulging at the start. One thing about that approach is I would want to figure out how to remove the actual filament change procedure. PMMA is quite brittle and snaps when unloaded by the default procedure. It'd be very helpful if it could "change filaments" without physically changing filaments.
Thanks for reading!
Best Answer by Neophyl:
Are you actually changing the filament at all ? It sounds like you want to keep using the same filament. If so why are you using the change filament process ? Sounds to me like you are going about this in completely the wrong manner.
Prusa Slicer has several ways to apply modifiers to Objects already. While the modifier functions could be better in that they have some limitations that most users don't expect it IS possible to change the Infill/Perimeter Overlap setting at the moment.
For example you could apply a Height Range modifier to your object, then on the modifier input select Advanced>Infill/Perimeter Overlap and set the value you want. You can set as many Height range modifiers as you like. So you can progressively set the values as you go along. No need to change filament. No change commands generated.
If you don't want to control by Height then you can use Object Modifiers instead which only effect the area where the modifier mesh overlaps your object. Those also have the same infill overlap option. Be aware that those types are more likely to cause the previously mentioned unexpected behaviour, especially where you set different things for perimeters.
You will need to put PS into Expert mode if you aren't already in that mode. There's a section on the Prusa Slicer knowledge base that covers the basics of modifiers https://help.prusa3d.com/article/modifiers_1767
RE: Changing Infill/perimeters overlap mid-print
Are you actually changing the filament at all ? It sounds like you want to keep using the same filament. If so why are you using the change filament process ? Sounds to me like you are going about this in completely the wrong manner.
Prusa Slicer has several ways to apply modifiers to Objects already. While the modifier functions could be better in that they have some limitations that most users don't expect it IS possible to change the Infill/Perimeter Overlap setting at the moment.
For example you could apply a Height Range modifier to your object, then on the modifier input select Advanced>Infill/Perimeter Overlap and set the value you want. You can set as many Height range modifiers as you like. So you can progressively set the values as you go along. No need to change filament. No change commands generated.
If you don't want to control by Height then you can use Object Modifiers instead which only effect the area where the modifier mesh overlaps your object. Those also have the same infill overlap option. Be aware that those types are more likely to cause the previously mentioned unexpected behaviour, especially where you set different things for perimeters.
You will need to put PS into Expert mode if you aren't already in that mode. There's a section on the Prusa Slicer knowledge base that covers the basics of modifiers https://help.prusa3d.com/article/modifiers_1767
RE:
@neophyl Fantastic! Thank you, I'd be scratching my head for a while on this one. I think I need to look through the Slicer course again see what other details and implications I didn't retain.