slic3r / Slic3r

Open Source toolpath generator for 3D printers
https://slic3r.org/
GNU Affero General Public License v3.0
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Feature Request: Archimedean Chords - Option to define direction of travel (Inside-Out or Outside-In) #5029

Open LordMelkor opened 3 years ago

LordMelkor commented 3 years ago

Is your feature request related to a problem? Please describe. Currently the when using Archimedean Chords, the behavior is for the toolpath seems to arbitrarily choose between drawing the spiral from the from the outside and work it's way into the middle, and starting in the middle and spiraling outward. However when moving from the outside in it appears that excess plastic builds up/melts around where the nozzle is situated in the middle and ruins the center.

Inside out, however, looks flawless.

Describe the solution you'd like A clear and concise description of what you want to happen.

Describe alternatives you've considered Would be great to see the ability to choose toolpath configuration, or what might also work just as well is to prevent Archimedean Chords from ever being drawn from the outside in.

LordMelkor commented 3 years ago

Top row is inside-out, bottom row is outside-in

Top row is inside-out, bottom row is outside-in