Design guide hub
All DFM topics on one route.
Design guide hubDFM
Boss Design: Injection Molding Design Rules
Bosses anchor fasteners and inserts. They also create thick steel and sink risk.
DFM
Core bosses or tie them to ribs
Rules NetProto DFM review checks against before steel is ordered.
Solid bosses on thin cosmetics are a common sink source.
Inserts need retention features sized for the selected brass or helical insert.
CAD checklist
Send this with your upload
Missing DFM inputs delay qualified quotes.
Insert vendor spec if used
Boss OD and ID
Connection to wall or rib
Related rules
Design guide
Jump to sibling rules before you freeze CAD.
DFM article
Long form engineer guide.
DFM articleWall thickness
Design rules for wall thickness.
Wall thicknessDraft angle
Design rules for draft angle.
Draft angleRib design
Design rules for rib design.
Rib designFAQ
Common questions
Do bosses need draft?
Yes, same release rules as outer walls.
Next step
Upload CAD for DFM-aware quoting
One hardened steel tool quote with piece price on the same upload.