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SoftFever / OrcaSlicer

G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)
https://discord.gg/P4VE9UY9gJ
GNU Affero General Public License v3.0
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Slow down for overhanging solid infills #6027

Open Ataraxia-Mechanica opened 4 months ago

Ataraxia-Mechanica commented 4 months ago

Is there an existing issue for this feature request?

Is your feature request related to a problem?

With low infill percentage (<10%), and ensure vertical shell thickness set to "all", on sloped surfaces the solid infill forms large, unsupported overhangs: overhang Due to the high speed solid infill is printed at, these overhangs would curl up, generating artifacts on the surface.

One solution for this is to set Don't filter out internal bridges to "no filtering". This works well with higher infill percentages, but due to low infill percentages present here, the bridges generated are long, thus taking up much more time and material. In the simple test case I have, the printing time is increased by +88%, and material usage increased by +52%: overhang2

Another solution is simply use more infill to support the solid infill part. This is particularly effective with gyroid infill, my hypothesis is gyroid infill changes where the solid infill is touching the sparse infill vertically, thus preventing the solid infill part from curling up. image I used 20% gyroid with infill combination here, at 22.5K acceleration. Increases time by +44%, material usage +41%. But this might not be feasible for certain things that require lightweightness and only a small part of it has a slope.

Thus I propose adding a detection mechanism that slows down solid infills that form an overhang: overhang3 In my test case, solid infill between top and bottom surfaces is slowed down to 120mm/s from 437mm/s with a height range modifier, increasing time only by +7.5%, and does not increase filament usage.

This suggestion should also fix an issue I have, where the soild infill ring before bridging was printed too fast and detaches from the wall, causing bridging failures: https://github.com/SoftFever/OrcaSlicer/issues/6017 and https://github.com/SoftFever/OrcaSlicer/issues/5639

3mf Project File for this test: 50deg.zip

Which printers will be beneficial to this feature?

Any printer that goes fast

Ataraxia-Mechanica commented 4 months ago

So, due to general improvements to my printer, 50 degrees can't cause this issue anymore. I'm going to use more extreme angles to make this work

vovodroid commented 4 months ago

I would also apply bridge cooling to such solid infill.

github-actions[bot] commented 1 month ago

Orca bot: this issue is stale because it has been open for 90 days with no activity.

Ataraxia-Mechanica commented 1 month ago

no stale pls