Who Owns the Tooling? Mold and Die Ownership Explained
You paid for the mold - but do you own it? How tooling ownership, transfer rights and NDAs decide whether you're free to move production or quietly locked to one supplier for years.
Here's a question most buyers never ask until it's too late: when you pay for an injection mold or a casting die, do you own it? The answer is often “not the way you think,” and it's the kind of thing that quietly traps you with a supplier for years — or leaves you unable to move your production when you most need to.
If your part needs hard tooling — a mold, a die, a stamping tool, a custom fixture — sort the ownership out before you cut the PO, not after the relationship sours.
Paying for it and owning it are not the same thing
You can pay the full tooling cost and still not have a clear right to take that tool somewhere else. Plenty of suppliers treat the mold as theirs — their design, their steel, sitting on their floor — even though your check paid for it. That ambiguity is fine right up until you want a second source, the supplier raises prices, quality slips, or they go out of business. Then “who owns the tool” becomes the only question that matters.
The three arrangements you'll see
| Arrangement | Who owns the tool | What it means for you |
|---|---|---|
| Customer-owned | You | You paid for it, it's yours, you can demand it be shipped to another shop. Maximum freedom. |
| Supplier-owned (amortized) | Supplier | Tooling cost is hidden in the per-part price. Lower upfront, but you're locked in — you can't take the tool. |
| Hybrid / contributed | Negotiated | You pay part, they pay part. Ownership and transfer rights spelled out in the contract. |
Get these four things in writing
- Title. A plain sentence: “Upon full payment of the tooling charge, the tool is the property of [you].” Without it, “you paid” doesn't equal “you own.”
- The right to remove it. Ownership is worthless if you can't physically get the tool out. Spell out that you can have it shipped to another facility on request.
- Maintenance & life. Whose job is it to maintain the tool, and what's the expected shot/cycle life before a refurb or rebuild? A worn-out tool you “own” isn't worth much.
- Storage. If it lives at the supplier between runs, who's liable if it's damaged or lost?
Don't forget the part itself is your IP
The tool is one asset; your design is another. Before you send CAD to anyone, have an NDA in place that covers your drawings, models, and process know-how — and that bars the supplier from making your part for someone else. This matters most when sourcing overseas; we cover the wider risk picture in global sourcing. A reputable supplier signs an NDA without blinking; one that resists is telling you something.
When supplier-owned is actually fine
Locking the tool to one supplier isn't always bad. If the per-part price is good, the relationship is solid, and the part isn't strategically critical, amortized supplier-owned tooling keeps your upfront cost low and offloads maintenance. The danger is only when you need to move and can't. Decide consciously — cheap-and-locked vs. pricier-and-portable — rather than discovering the arrangement by accident.
The CNC exception
All of this is a tooling-process problem. Pure CNC machining has no mold to own — just a program and fixtures — so moving a machined part to a new shop is as easy as sending the CAD again. That portability is an underrated reason to stay with machining for parts where second-sourcing flexibility matters, a tradeoff we lay out in casting vs machining.
When we quote tooled parts, we put ownership in writing — pay for the tool and it's yours, with the right to move it — and we sign an NDA before we ever open your files. If you're weighing a molded or cast part and want the tooling terms spelled out before you commit, send the part for a quote or talk it through with an engineer first.
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