The 45° Overhang Rule, and When It Is Wrong
The 45 degree rule measures how much of each layer the one below supports. The geometry behind it, why layer height moves the limit, and how to design past it.
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How Thick Should 3D-Printed Walls Be?
Wall thickness is set by the nozzle, not by a rule of thumb. Why two perimeters is the real minimum, where strength comes from, and what to calibrate.