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How Infill Percentage Affects Strength, Speed, and Filament Use
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this post was submitted on 01 Apr 2026
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I've found 100% infill weaker than something like 60%, it won't break per se, it would delaminate. Also number of walls is really important you can dial down infill to 20-25% if you have 6 walls or more.
I often print 3 walls and 10% infill and the prints are plenty strong. These are not high stress objects, but they can take plenty of stress without breaking.
I did print some curtain rod holders for some outdoor curtains. They had 3 walls and I think 25% infill. They do get a lot stress from the wind blowing, but they have held up very well in the 3 months they have been up.