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Support Extrusion Too Thin with 0.8mm Nozzle  

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Lukaz
(@lukaz)
Membre
Support Extrusion Too Thin with 0.8mm Nozzle

 Hey everyone, I'm having an issue when switching to a 0.8mm nozzle for larger prints. The main model prints fine, but the support structures come out under-extruded and weak. It seems like the slicer is still trying to use a much thinner extrusion width (like it would for a 0.4mm nozzle), and the printer just can't handle such a small flow through a large nozzle.

I've already tried slowing down support print speeds, but it hasn’t helped much. The supports still come out stringy, weak, or incomplete.

I suspect the issue is the support line width being too narrow for the 0.8mm nozzle. So a couple of questions:

Where can I find the setting to adjust the support line width?

I'm using ABS, anyone got a good setting setup for extrusion widths for 0.8 nozzle?

Thanks in advance!

 

Publié : 31/07/2025 8:30 am
BaconFase
(@baconfase)
Reputable Member
RE: Support Extrusion Too Thin with 0.8mm Nozzle

Print Settings>Advanced>Extrusion width>Support material

Prusa defaults for a .8 nozzle is .65

XL-5T, MK3S MMU3 || Printing with multiple nozzle-sizes: Official Guide, Unofficial(old) || PrusaSlicer Fork || Other advanced slicer tactics || TPU || HF Nozzles

Publié : 01/08/2025 5:33 am
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