search

supermerill / SuperSlicer

G-code generator for 3D printers (Prusa, Voron, Creality, etc.)
4.1k stars 517 forks source link

fan speedup time erase overhang fanspeed #2670

Open foxmckraut opened 2 years ago

foxmckraut commented 2 years ago

What happened?

if you use -1 or 0-60% fanspeed at external perimeters, overhangs will be fanned fine. at 70% external perimeter fanspeed the overhangs will not blown at 100% anymore.

Project file & How to reproduce

use external perimeter fan -1 > slice use 80% > slice

Bildschirmfoto 2022-04-09 um 07 45 06 Bildschirmfoto 2022-04-09 um 07 44 59 Bildschirmfoto 2022-04-09 um 07 41 46 Bildschirmfoto 2022-04-09 um 07 41 57

Version

2.4.58.2

Operating system

Macosx 12.2.1

Printer model

Anycubic i3 mega s

supermerill commented 2 years ago

image

foxmckraut commented 2 years ago

image

What fanspeed on external perimeters you use? It only happens on 70-99%

supermerill commented 2 years ago

80%

why you don't want to share your project file as requested in the issue template?

foxmckraut commented 2 years ago

Oh sry my Laptop is in repair now I’ll share an Projekt file I have on my nas:

https://www.file-upload.net/download-14902192/7tailed_fox_supports1.3mf.html

This should do the job

edit: I haven’t seen the point for the Projekt file, my fault.

supermerill commented 2 years ago

Ok, first, you have to lower the overhang threshold or other is none. 30% is what you want, I think.

Then, the problem lie on the fan speedup time, that is also pushing the slowdown (it shouldn't). Using "only for overhangs" (or disable it) seems to resolve the issue.