1 Topic by Claghorn

  • Claghorn
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  • From: Delray Beach, FL
  • Registered: 2012-10-22
  • Posts: 730

Topic: overhang print speed with fan?

I notice the default slic3r settings call for printing overhangs at higher speed, but I sort of wonder if that is a good idea now that I've rigged up a PWM controlled cooling fan? It seems like the burst of speed is more likely to drag the filament out of position than being slow and steady.

Obviously the thing to do is just try a slower speed and see what happens, but I wonder if there is any conventional wisdom about this?

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2 Reply by mdrVB6

  • mdrVB6
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  • Registered: 2013-12-18
  • Posts: 717

Re: overhang print speed with fan?

Even without a fan pointed at the print, I get fine overhangs without speeding them up and noticed that my prints looked worse when I would speed up overhangs.  I noticed this was an added feature in one of the newer versions of slic3r.  The overhang per layer should, of course, be less than the path width.  I see no reason to do overhangs at speeds other than your typical perimeter speed.

SD4 w/ RUMBA, E3D Volcano, all bearings, glass bed