3D Printing Fastening Knowledge Hub
A practical boss OD ratio reference for heat set inserts in 3D printed parts, covering insert outside diameter, boss outside diameter, wall thickness, hole size, edge distance, pull-out strength, torque resistance, and common boss failure modes.
A practical M5 heat set insert dimensions reference for 3D printed parts, covering hole size, insert outside diameter, boss design, boss depth, screw engagement, pull-out strength, torque resistance, and structural fastening limits.
A practical M4 heat set insert dimensions reference for 3D printed parts, covering hole size, insert outside diameter, boss design, boss depth, screw engagement, pull-out strength, torque resistance, and structural fastening limits.
A practical M2.5 heat set insert dimensions reference for 3D printed parts, covering hole size, insert outside diameter, boss design, boss depth, screw engagement, material behavior, and compact fastener design limits.
A practical M2 heat set insert dimensions reference for 3D printed parts, covering hole size, insert outside diameter, boss design, boss depth, screw engagement, and small fastener design limits.
Heat set inserts loosen in PETG but crack in PLA because PETG tends to deform or creep under preload, while PLA is stiffer and more likely to fracture under radial stress.
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 when the hole is too large because the insert cannot create enough mechanical engagement with the surrounding printed plastic, reducing torque resistance and pull-out strength.
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.
Heat set inserts fail in thin wall 3D printed parts when there is not enough surrounding plastic to support installation pressure, screw preload, torque, pull-out load, or repeated assembly.