Design guide hub
All DFM topics on one route.
Design guide hubDFM
Draft Angle: Injection Molding Design Rules
Draft is what lets the part leave the mold without scuffing or sticking.
DFM
Draft every face that pulls on the mold opening direction
Rules NetProto DFM review checks against before steel is ordered.
Texture depth eats usable draft. Call out texture before you assume one degree everywhere.
Undercuts need side action or redesign, not zero draft on vertical walls.
CAD checklist
Send this with your upload
Missing DFM inputs delay qualified quotes.
Draw direction on PDF or CAD view
Draft on textured faces called out
Parting line note if asymmetric
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 thicknessRib design
Design rules for rib design.
Rib designUndercuts
Design rules for undercuts.
UndercutsFAQ
Common questions
Is one degree enough?
Smooth walls often start near one degree. Texture needs more per supplier guidance.
What if I cannot add draft?
Expect DFM pushback, side actions, or cosmetic risk on drag faces.
Next step
Upload CAD for DFM-aware quoting
One hardened steel tool quote with piece price on the same upload.