Cost benchmark
DFM cost: design for manufacturing reviews and rework
DFM is the cheapest insurance in hardware. A few thousand dollars of review before tool cutting routinely prevents tool revisions, scrap and a schedule slip that each cost an order of magnitude more.
| Line item | Low | Median | High |
|---|---|---|---|
| Single-part DFM review | $500 | $1,500 | $4,000 |
| Full product DFM package | $3,000 | $9,000 | $25,000 |
| DFA (assembly) review | $1,500 | $5,000 | $15,000 |
| Tolerance stack-up analysis | $1,000 | $4,000 | $12,000 |
| Mold flow / structural simulation | $800 | $3,000 | $9,000 |
| Late rework after tooling is cut | $5,000 | $20,000 | $80,000 |
What drives the range
- Part count and how many parts are molded versus machined
- Whether the CM offers free DFM in exchange for the production order
- Cosmetic requirements and tight tolerances
- How mature the design is when DFM starts (late DFM costs the most)
Common questions
How much does a DFM review cost?
Expect $500 to $4,000 per part for an independent review, or $3,000 to $25,000 for a full product package. Many contract manufacturers include a basic DFM pass for free when you commit to production with them.
Is free DFM from my contract manufacturer enough?
It catches moldability and assembly issues, but it optimizes for that factory's process and rarely challenges cost drivers like part count or material choice. An independent review before you select a CM usually pays for itself.
When should DFM happen?
Start once the mechanical design is roughly 70% locked and repeat before tool release. DFM after tooling is cut turns into tool revisions at $500 to $8,000 each plus weeks of schedule.
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