Injection Molding Part Design & DFM Tools

Turn measurements from CAD and supplier requirements into four traceable feature screens before the formal moldability review. These tools do not inspect CAD, predict defects, or approve a part for tooling.

Feature-screening workflow

Measure the part, screen each feature, then validate the complete design.

01
Establish the wall basis
Record nominal, minimum and maximum CAD wall thickness and the project-specific allowable deviation.
CheckerWall Thickness Uniformity
02
Screen reinforcing ribs
Compare rib base thickness, height, clear spacing and base radius with the adjacent nominal wall.
CheckerRib Design
03
Screen fastening bosses
Keep the boss wall, fastener or insert, outside diameter and base radius on one measurement record.
CheckerBoss Design
04
Check draw direction and finish
Compare actual CAD draft with the supported depth reference and the texture or finish supplier's minimum.
CheckerDraft & Texture

Measurement and validation guides

DFM Measurement Workflow

Define draw direction, measurement locations, wall basis and supplier inputs before running a feature screen.

Feature Validation Before Tooling

Convert flags into CAD review questions, prototype evidence, moldmaker feedback and first-shot checks.

Method boundary

The ratios are early design references, not universal acceptance limits. Resin grade, appearance class, fiber orientation, gate and cooling layout, tool steel, machining, ejection and part function can change the appropriate geometry. Preserve every source and project override with the result.

Sources: Protolabs wall-thickness guidance · Protolabs design essentials · Protolabs injection-moulding design guide · Covestro strategic-radii guidance.