What does "Nozzle Diameter" do?  

RE: What does "Nozzle Diameter" do?

In terms of internal PrusaSlicer calculations, there are a few limits and warnings. If you set a large extrusion width you may get a "do you mean %" warning. There here is at least one setting that can't be set larger or smaller than the nozzle size, but I can't think of it at the moment. I've encountered it when doing unusual prints. I think it was related to infill. You can set most settings to nonsense values otherwise.

Common settings that I take nozzle size into account for are:

• Layer height (<80% of nozzle size). I set dependencies to limit layer heights to ranges the current nozzle can handle in my presets.
• Extrusion width (<200% of nozzle size). I usually go with 0 (auto) for all widths but will tweak it for specific prints.
• Speed (via Max Volumetric Speed). I've done some rough calculations on maximum MVS settings for different filament and nozzle sizes.
• Min and Max layer height (for variable layer height limits).

I've got some notes on the topic you might find useful.

RE: What does "Nozzle Diameter" do?

Posted by: @zunzun

Bridge Flow Ratio x Nozzle Diameter outputs the bridge line width

1.05 x Nozzle Diameter outputs the Perimeter Overhang line width

What else does Nozzle Diameter do? I'd love to be able to set those settings manually though

What does "Nozzle Diameter" do?

"Nozzle Diameter" in slicer is where you tell the slicing software what the "physical size" of the nozzle orifice is, so that it knows how to handle flow and other settings you make.

Regards

Swiss_Cheese

RE: What does "Nozzle Diameter" do?

Posted by: @bobstro

[...] There here is at least one setting that can't be set larger or smaller than the nozzle size, but I can't think of it at the moment. I've encountered it when doing unusual prints.

Ah, found it! If you set the layer height higher than the nozzle size, you'll get an error when slicing and it will fail.