Prusaslicer: Monotonous infill for middle solid fill layers

[vintagepc]

Version

2.3.0-Alpha

Operating system type + version

Linux (OpenSuSE 42.3 x64)

3D printer brand / version + firmware version (if known)

MK3S/MMU2S 3.9.0/1.0.6

Behavior

Please make Monotonous infill also able to be applied to middle solid infill layers. It leads to some improvement but much of this is lost if the layer underneath still exhibits the scarring/ridges generated by standard rectilinear fill.

_Is this a new feature request?_
Sort of - it's an improvement on a new feature.

Project File (.3MF) where problem occurs

N/A - any non-rectangular part that would result in ridges with standard rectilinear fill.

[timur-tabi]

For the record, "monotonous" is not the right word. The correct word is "monotonic".

[n8bot]

https://github.com/prusa3d/PrusaSlicer/commit/7fbdda90803fc2653e2bddc6217ef641acb35578

[vintagepc]

Fair enough, I was going by the explicit nomenclature at the time.

[edwardyeeks]

FWIW, I too notice a scar or two from the solid fill layer directly beneath the top fill that's set to monotonic. Besides providing settings to set solid infill as monotonic, another option would be providing settings where one can set the number of top fill layers. I think setting the top 2 or 3 layers as monotonic should be enough to hide away any scars from the rectilinear solid fills beneath them.

[bubnikv]

Just adding the Monotonic infill to the list of existing "Fill pattern"
does not cut it, as it changes the sparse infill as well.

We would need to add another config option, either "solid fill pattern", or
a "solid fill monotonous" checkbox,

or just use the Monotonic infill for all solid infill if the top infill is
set to Monotonic (very simple and likely passable, as the Monotonic infill
works as good as the rectilinear, possibly slower to optimize)
or just use the Monotonic infill for couple of layers below (more complex
to implement, possibly slower to slice, possibly problematic as it would
split the solid infill to montonic and regular part.

út 20. 10. 2020 v 1:45 odesílatel edwardyeeks [e-mail]
napsal:

FWIW, I too notice a scar or two from the solid fill layer directly
beneath the top fill that's set to monotonic. Besides providing settings to
set solid infill as monotonic, another option would be providing settings
where one can set the number of top fill layers. I think setting the top 2
or 3 layers as monotonic should be enough to hide away any scars from the
rectilinear solid fills beneath them.

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[vintagepc]

There's definitely a case to be made for using monotonic infill for all non-decorative solid layers; the scarring will also affect any other decorative top infill pattern one might pick if there is standard rectilinear fill below.

I'd be more than happy with a "solid fill monotonic" checkbox that enables it for all solid top/bottom layers beyond the very first and last. :+1: