this post was submitted on 24 Feb 2025
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A great quantitative examination of the effects of infill on part stiffness.

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[–] Tolookah@discuss.tchncs.de 13 points 3 days ago (1 children)
[–] Yuper@lemmy.world 5 points 3 days ago
[–] thisbenzingring@lemmy.sdf.org 10 points 3 days ago (1 children)

this hobby needs old guys with lots of time and equipment to do these types of things :D

[–] IMALlama@lemmy.world 3 points 2 days ago

Bonus points for talking like they've been a teacher for a while!

[–] IMALlama@lemmy.world 1 points 2 days ago (1 children)

This is a pretty cool video. It would be interesting to do the same style test and leave infill fixed at a lower value while progressively adding more top/bottom layers. My suspicion is that more top/bottom layers would result in more stuffness.

[–] paf@jlai.lu 2 points 2 days ago (1 children)

If you keep a low infill, top/bottom layers will be rapidly more efficient but will cost more time and material than infill. The amount of wall is also to take into account. Few years back, I remember a test video showing that wall number were actually more efficient than infill. But depending how the test is being done, this might change.

[–] IMALlama@lemmy.world 1 points 2 days ago

For the test in question, top/bottom layers would help more than walls. I could see walls mattering more for different types of loading. Considering this video didn't really see an increase in strength until 40% infill, one or two more top/bottom layers might actually use less material and result in more strength/rigidity.