Design guide hub
All DFM topics on one route.
Design guide hubDFM
Uniform Wall Thickness: Injection Molding Design Rules
Uniform walls simplify fill and cooling. Real parts still need controlled transitions.
DFM
Transition thickness over distance, not in one step
Rules NetProto DFM review checks against before steel is ordered.
Step changes show up as hesitation lines or weak knit areas.
Use coring to hollow thick regions instead of packing solid plastic.
CAD checklist
Send this with your upload
Missing DFM inputs delay qualified quotes.
Section views showing transitions
Cored thick regions noted
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
Must every wall be identical?
No, but transitions should be gradual and intentional.
Next step
Upload CAD for DFM-aware quoting
One hardened steel tool quote with piece price on the same upload.