Slow down for internal solid infill overhangs

[Ataraxia-Mechanica]

Is there an existing issue for this feature request?

• [X] I have searched the existing issues

Is your feature request related to a problem?

For sloped external surfaces, the inner surface effectively becomes an overhang, but the innermost part of the infill is printed at full speed with fan off. This causes them to curl up and form surface defects.

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

Slow down and enable fans for internal solid infill if they form an overhang

Describe alternatives you've considered

Turning off detect narrow infill seems to lessen the impact of printing on mid air, but it slows the printer down, especially when it comes to low acceleration machines.

Additional context

No response

[igiannakas]

Enable the dont filter out small internal bridges (beta) option. Set it to Limited filtering. This should create a bridge layer in areas where internal overhangs are present (which is the right way to solve this). If you are still not getting bridges, set it to No filtering

[Ataraxia-Mechanica]

But it slows down further than no narrow infill detection :( 50% speed and 100% fan should make the overhang in the image printable. Limited internal bridge filtering also causes bumps on steeper internal surfaces at least on both of my printers, which I solved by bumping the infill percentage up instead.

[hsinyu-chen]

have same issue on 20 degree gentle slopes ,the Limited filtering option not work seems only No filter works

[igiannakas]

have same issue on 20 degree gentle slopes ,the Limited filtering option not work seems only No filter works

For very shallow slopes only the no filter gives the desired result. Not much that can be done for this unfortunately as allowing bridging for shallow slopes results in side effects for regular overhangs inside the models.

[github-actions[bot]]

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

[github-actions[bot]]

Orca bot: This issue was closed because it has been inactive for 7 days since being marked as stale.