3D Printing Fastening Knowledge Hub
This engineering reference explains how edge distance affects heat set insert strength in 3D printed parts, including corner cracking, insert spin, pull-out failure, and thin wall design risk.
Heat set inserts crack PLA bosses when brittle printed plastic cannot absorb radial stress from insert installation, tight hole sizing, thin boss walls, edge distance, or screw load.
Heat set inserts fail near edges or corners when there is not enough surrounding printed plastic to resist installation stress, screw preload, torque load, or pull-out force.