Weak Across Layers: How Much, and What Moves It
Printed parts are weaker across layers. Folklore says by half; tests say a tenth to nine tenths. What a bond is, what moves it, and a coupon to measure it.
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How Much Clearance Does a Printed Thread Need?
A printed thread comes out tight, and how tight depends on which way up it was printed. Why pitch limits printability, and the coupon that settles it.