Tooling custody: who owns your mold, and how to get it back

You paid for the steel. Whether you can ever move it depends on paperwork most buyers never sign. What the ownership clause has to say, what custody looks like day to day, and the order to do things in when a tool has to leave a factory.

Filed under Molds and tooling

Every buyer who has paid for a mold assumes it is theirs. Most of the time nobody tests the assumption. It gets tested on the day you tell a factory you are moving production, and that is the worst day to find out what your paperwork says.

This note covers who owns a tool, what has to be written down for that to mean anything, what custody looks like while the tool sits in someone else's building, and how to get it out. It is practical guidance, not legal advice; for a contract that has to hold up, use a lawyer who drafts these for a living.

Paying for the tool is not owning it

The China lawyers at Harris Sliwoski put it plainly: "paying for a mold settles almost nothing" (Harris Sliwoski). An invoice marked "mold fee" proves money moved. It does not say who owns the steel, who may hold it, whether it can run parts for someone else, or when it has to be released.

The failure it leads to has a name among people who move production: the mold hostage. The same firm describes the sequence plainly. The buyer tells the factory it is leaving; the factory keeps the tooling and claims to own it. "This is incredibly common" (Harris Sliwoski). Their advice on timing is the part to underline: get the ownership agreement signed well before the factory has any idea you might move.

What "tooling" has to mean in the contract

A clause that says "the mold" leaves out most of what you paid for. The recommendation is to define tooling broadly: molds, dies, jigs, fixtures, gauges, templates, test equipment, prototypes, software, CAD files, drawings and specifications (Harris Sliwoski).

That list matters more than it looks. A molded housing may need the mold, a trimming fixture, a leak-test jig and a gauge. An electronics product adds test fixtures and the test program. Recover the mold without the test jig and the new factory cannot ship.

The clauses that do the work

A tooling agreement worth signing covers, at least:

• Ownership, and when it passes. The buyer owns the tooling, including tooling the factory designed, from a stated point.
• Custodian, not owner. The factory holds the tooling as custodian. Storage, maintenance, repair and use create no ownership rights.
• Use. Only for your product, never for anyone else's.
• Marking and location. Permanent plates or tags identify the tool as your property, and it does not move to another facility without written approval.
• Return. When the factory must release it, how fast, where delivery happens, who arranges transport, and which files and records go with it.
• Remedies. A deadline and a damages provision that make holding the tool more expensive than releasing it.

The points on custody, marking and return are all set out in the same Harris Sliwoski guidance (Harris Sliwoski).

One more that buyers miss: sign it with the company that physically holds the steel. "Without a dedicated mold and tooling agreement signed by the factory physically holding the steel, you likely will not be able to prove you own the tooling or force its return" (Harris Sliwoski). An agreement with a trading company or an offshore affiliate is not an agreement with the plant.

Custody, day to day

Ownership is paper. Custody is knowing where the tool is and what state it is in. A custody record answers five questions for every tool: where it is, whose nameplate is on it, how many shots it has run, when it was last maintained, and what it would take to move it. Add photographs of the plate and the cavity, a copy of the drawings on your side, and the spare inserts and electrodes listed.

Keep the record current, not just complete. A tool that has run for three years without a maintenance entry is a tool whose condition you do not know. The ranges for what a tool costs, and why its class matters, are in what an injection mold really costs.

How to get a tool back

In this order:

1. Paper first, before the conversation. Find the invoices, the ownership clause and your photographs. If there is no signed agreement, try to get one signed while the relationship is still normal.
2. Inventory what you own. Every mold, insert, fixture, jig, gauge and test program, with its location. Check it against what is on the floor, not against what is on a list.
3. Settle tooling money cleanly. If anything is owed on the tools themselves, pay it as a separate line so the tooling release is not tangled with a parts dispute.
4. Inspect before it is crated. Photograph the cavities, pull last-shot samples, collect the spare parts and the files. A tool that arrives damaged, or without its inserts, is a new tool.
5. Re-qualify at the new shop. A moved tool gets a new first trial and a measured first article. Plan it like a new T1.
6. Tell customs about it. If the tool goes to a new factory for parts you import, its value is part of the customs value of those parts; see the tariff math on moving a product.

If the factory will not release the tool, the choices are the contract remedies, a negotiated buy-out, or cutting a new tool. The last is often the fastest, and it is why the drawings and CAD have to live on your side, not only in the factory's toolroom.

How Jack handles custody

Jack designs, maintains, stores and moves the tools on the programs he runs, and custody is part of the job, not an afterthought. He knows where each tool is and what condition it is in, he talks to the toolroom in Mandarin, and when a tool has to move he audits it, crates it and re-qualifies it with a measured first article at the other end. Photographs of that kind of work are on Jack's tools.

A tool is yours when a signed paper says so, a plate on the steel says so, and someone who answers to you knows where it is.

Straight answers

If I paid for an injection mold in China, do I own it?

Not necessarily in any way you can enforce. Paying a mold fee shows money moved, but it does not establish who owns the tool, who may hold it, whether it can be used for other customers, or when it must be released. A written tooling agreement, signed by the factory that physically holds the tool, is what establishes ownership and return rights.

What should a mold ownership agreement include?

A broad definition of tooling (molds, dies, jigs, fixtures, gauges, test equipment, CAD files and drawings); buyer ownership and when it passes; the factory as custodian, not owner; use only for the buyer's product; permanent ownership plates and no moving without written approval; a return process with deadlines, delivery point, transport and files; and a damages provision for delay or refusal.

Why do factories refuse to return molds?

Usually because the buyer has announced it is moving production and there is no signed agreement making the buyer's ownership and return rights clear. Law firms that handle China manufacturing describe this as very common. The prevention is to have the tooling agreement signed well before the factory suspects a move.

How do I move my mold to another factory?

Gather the invoices, ownership clause and photographs first; inventory every mold, insert, fixture and test jig; pay any amount owed on the tooling as a separate line; inspect and photograph the tool and collect samples, spares and files before crating; then re-qualify it at the new shop with a new first trial and a measured first article.

What if the factory will not release my tooling?

The options are the remedies in your contract, a negotiated buy-out, or cutting a new tool. Cutting a new tool is often the fastest route, which is why the drawings and CAD files should always be kept on the buyer's side. For contract enforcement, use a lawyer experienced in the country where the tool sits.

How this note was made: researched and drafted with AI assistance, checked against the sources listed below and edited at JCH Design & Manufacturing.