Choosing and Working With a Contract Manufacturer
How to find, vet, and quote with a contract manufacturer — what a quote actually contains, questions that separate a real shop from a risky one, and how to protect your IP along the way.
What a Contract Manufacturer Actually Does
A contract manufacturer (CM) builds your product for you, at a scale and cost you usually can't match building it yourself — anything from a small local shop doing low-volume assembly to a large overseas factory running injection-molding lines. What they don't do is design your product for you: you (or a hired designer/engineer) still own getting the design manufacturing-ready before a CM can quote it accurately.
Domestic vs. Overseas: The Real Tradeoffs
Neither is universally right — it depends on your volume, budget, and how much oversight you need
| Domestic | Overseas | |
|---|---|---|
| Unit cost at volume | Usually higher | Usually lower, especially at scale |
| Communication | Easier, often same-day | Harder, often a full day's lag per round trip |
| IP and quality oversight | Easier to visit and inspect | Harder without a local agent |
| Minimum order quantities | Often more flexible | Often higher to be worth it for them |
| Lead time | Usually shorter | Usually longer, plus shipping |
Many founders start with a domestic or nearshore shop for a first small production run — even at a worse unit cost — specifically to de-risk the first run before committing to a larger overseas relationship.
The Search and Vetting Process
Before you commit to a manufacturer
0/4Protecting Your IP
An NDA before sharing detailed designs is standard practice, not something to be embarrassed about asking for. It won't stop a determined bad actor, but it establishes a paper trail and is a reasonable baseline expectation any legitimate manufacturer will sign without pushback. Splitting sensitive sub-assemblies across multiple suppliers, when practical, is a further step some founders take for a product where the IP risk is especially high.
Reading a Quote
A real quote should break out, separately, four things:
Key Terms
- Unit cost
- The per-unit price at the quoted quantity. Ask for pricing at 2-3 different volume tiers — unit cost usually drops meaningfully at higher quantities.
- Tooling cost
- A one-time, often substantial cost for molds and fixtures. Separate from unit cost, and usually non-refundable once committed.
- Minimum order quantity (MOQ)
- The smallest run size the manufacturer will produce — this can rule out a supplier entirely if it's far above what you need for a first run.
- Lead time
- The time from order placed to product in hand — not just "manufacturing time," which often omits queueing and shipping.
Red flags
A quote with no clear breakdown, a shop unwilling to provide any references, or pricing dramatically lower than every other quote you received are all reasons to slow down and dig deeper, not reasons to feel lucky.
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From Prototype to Production: What Actually Changes
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Design for Manufacturing (DFM) Basics
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