Guides
A guide gives the overview of one topic and links to the answer pages that each own a number.
What brass heat-set inserts are, the M2 to M5 size families with hole and wall figures, the iron temperature rule, and the 181 kg M3 pull-out from CNC Kitchen's test.
Printed parts are weakest across layers: Bambu Lab PETG Basic pulls 51 MPa in XY and 35 MPa in Z; Prusament PETG's interlayer adhesion is 18 MPa against 47 MPa flat.
Prints leak by default. Prusa Research's fix: 4 to 6 perimeters, 105 to 110 percent flow, 0.15 mm layers, one vase-mode wall, and epoxy for parts that must stay sealed.