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Design for manufacture (DFM)

Design for the process.

DFM

Overview

Design for Manufacturability (DFM) shapes parts so they're cheap and reliable to produce — respecting draft angles, wall thickness, and process limits. Good DFM prevents costly redesigns late in development.

How it works

DFM
DesignProcessAdjustOutputPartmodelMethoddraft/radiiFor MFGcost ↓Producible
ClientServiceEdgeData

Step by step, with examples

  1. 1

    Part

    • Start from the required function.
  2. 2

    Method

    • Match to molding, machining, or printing.
  3. 3

    For MFG

    • Uniform walls and tooling access.
  4. 4

    Producible

    • Deliver a manufacturable part.
    • Example: injection molding

Overview

Adapt geometry to the process: draft angles for molding, uniform wall thickness, tool-access for machining, self-locating features for assembly.

Common pitfalls

  • Sharp internal corners for machining
  • Non-uniform walls (sink marks)
  • No draft on molded parts

Where this content comes from

For full transparency, this content is curated and verified from these sources:

ASME Y14.5 GD&T standardParametric CAD vendor documentationOppZen-authored CAD design guides