Smarter Reduce infill retraction

[jb510]

Is there an existing issue for this feature request?

• I have searched the existing issues

Is your feature request related to a problem?

I print a lot of dust collection adapters, which are essentially 20-100mm pipes of various sorts. I had horrible failures with stringing and blobs on the interior and couldn't figure out for days what was causing them. I was chasing temps, speeds, pressure advance and retraction. I had not idea the "other" tab had a little checkbox called "reduce infill retraction" that appears to be on by default.

Disabling that eliminated 99% of the problems. I'm perfectly happy with it always off and think that should be the default, but...

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

It would also seem to me that Orca could be made smart enough to detect the difference between a small or fully enclosed interior void, and an open interior void like a pipe would have. That could make that setting a lot more useful to leave on.

Describe alternatives you've considered

1. defaulting "reduce infill retraction" to off
2. allowing users to set the reduced inflll retraction to a number/override.

Additional context

No response

[jb510]

I'm going to do more testing. This could have been related to scarf joint as much if not more than infill retraction.

[vgdh]

Scarf can leave some filament on the nozzle and it can cause stringing.
You can try to use different print order like outer>inner.
Also enable feature "avoid crossing walls"

[jb510]

FWIW, I think this was actually the problem described here #7191 and hopefully resolved by this patch #7208.