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Sensible wall thickness and infill for tall walls? (lemmy.ml)
submitted 1 month ago by cyberwolfie@lemmy.ml to c/3dprinting@lemmy.world
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I'm printing some Gridfinity bins for some drawers, and one of them needs to be quite tall to fulfill its purpose (18u, ~130mm). I took a shortcut and generated one from this generator using the default wall thickness and printed using Prusament PLA. This resulted in the walls falling in on itself, and my second failed print.

In hindsight, considering the wall thickness of 0.95 mm, this seems pretty obvious to me now. I want to give it a second go, but beef up the wall thickness and make sure there's some proper infill between the outer walls to keep it stiff.

At the same time I don't want to waste too much filament, so I want to hit a sweet spot of sufficiently thin walls and sufficiently low infill percentage, while avoiding another failed print.

Anyone have good experience with these kinds of prints that could give some input on a rough estimate for what I should aim for here?

I am using Adaptive Cubic infill by the way, but for no other reason than that has become my default infill pattern after some previous suggestions made here.

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[-] cyberwolfie@lemmy.ml 1 points 1 month ago

otherwise they will be prone to warp and collapse in on each other. If your item will be as tall as you suggest, this is likely to happen before the print even finishes

Yeah, this is what happened in the original, failed print.

I ended up making the model with 3mm thick walls, using two perimeters and 10% adaptive cubic infill (I sliced with gyroid as well, but it looked weird). Turned out great. I made some that were not quite as tall as well, with 2mm thick walls and 3 perimeters, which worked fine as well. It might have worked for the main boss here as well, but I'm not quite sure. The difference between the models was about 55 mm in height. The difference in material usage between the two options was negligible (< 10 g), with the infill variant coming out slightly lower in consumption.

this post was submitted on 01 Jan 2026
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