Hi developers!
slicing overhangs is still a huge issue, even in modern slicers!
Very often we would be able to skip the annoying support
material if only - if only the slicers were smart enough!
Why build a perimeter (shell) in the open air
so that the material all
falls down (driven by gravity)?
THIS IS A REQUEST for an additional expert setting named
"use smart overhang slicing"
Description for the desired feature:
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Improvement A
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The smart overhang slicer should slightly adapt some (up to 3) layers
below and above the currently sliced layer as shown in the figures:
fig 1: front view of the print model
xxxxxxxxxxxxxxxxxxxxxxxxx <- layer +3
xxxxxxxxxxxxxxxxxxxxxxxxx <- layer +2
xxxxxxxxxxxxxxxxxxxxxxxxx <- layer +1
xxxxx <- layer 0 (currently sliced)
xxxxx <- layer -1
xxxxx <- layer -2
xxxxx <- layer -3
xxxxx
fig 2: front view of the adapted print model
xxxxxxxxxxxxxxxxxxxxxxxxx <- layer +3
xxxxxxxxxxxxxxxxxxxxx <- layer +2
xxxxxxxxxxxxxxxxx <- layer +1
xxxxxxxxxxxxx <- layer 0 (currently sliced)
xxxxxxxxx <- layer -1
xxxxx <- layer -2
xxxxx <- layer -3
xxxxx
Layers +1,+2,+3 become slightly cut while layers -1,-2,-3 become slightly extended.
This is done by "secretly" adapting 3 already sliced layers and by "secretly" adapting 3 "next to come" layers.
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Improvement B
************************
The smart ovehang slicer should first build the overhang infill
in direction INSIDE-OUT and then it should build the overhang
shell upon the cooled infill matter.
This also implies that the infill/shell overlap setting should
be increased for the overhang portion.
This also implies that the infill speed should be decreased for the
overhang portion.
Remark:
Even if this method neglectibly distorts the model I would ALWAYS
prefer this option over using a support material!
yours, Gerald Trost
PS: please, forward this request to the development team.