What to decide before you order a mould: four decisions to close first

Before ordering a mould, close four decisions in writing: buyers have committed money at your planned price, one document defines the product, every open decision has one named owner, and a design freeze date is agreed. Most late mould rework starts when one of these was only agreed in a meeting.

A mould is usually the first big cheque in a new product. It is also the point where mistakes stop being cheap. A wrong wall thickness on a drawing costs an afternoon. The same mistake found at the first trial costs weeks and a steel modification.

Most late problems in tooling projects do not start in the toolroom. They start earlier, when something was never decided, or was decided only in a meeting and never written down.

Here are four decisions to close before you order tooling.

1. Will anyone actually pay your planned price?

Compliments are not proof. A buyer who has paid, signed an order or given a written commitment is proof. "People like it" is not.

If the price has not been tested with real buyers, every later number rests on a guess: the target cost, the tool budget and the volume. Test the price before design spend, not after the mould is built.

2. Is the product written down in one place?

Ask one question: if your design agency started tomorrow, could they begin without calling you to ask what the product must do?

If the honest answer is "partly", the agency will fill the gaps with its own assumptions. You will then react to its designs, and each reaction is a change. Changes after design freeze are one of the most common sources of mould rework.

One document should state what the product must do, what it can cost, and which parts are bought outside.

A real example: a company developing a consumer billing machine told us their bought-out components were ready. Design started, and challenges appeared one after another. The design kept changing. For a few of those bought-out parts the project was finally put on hold, and it took the company eight months to return.

3. Who owns each decision?

"We agreed in the meeting" is not ownership. For every open decision, name one person on your side who can say yes, and one date by which they will.

Projects slow down when two people each think the other will decide.

4. What is frozen, and when?

A freeze means that after a stated date, any change goes through a written change request that shows its cost and its delay. Without a freeze, design keeps moving while the toolmaker is already cutting steel.

Agree the freeze point before design starts, not after the first quote arrives. Once it is agreed, the written product definition from decision 2 becomes the reference for every supplier. For how to turn it into comparable quotes, read how to choose a mould supplier: align your SOR before you compare quotes.

What the four decisions have in common

None of them needs a tool, a machine or a supplier. They need clarity, ownership and a written record. That is why they are so often skipped: nothing forces them to happen.

A governed process forces them. Each stage has entry criteria, evidence and a named approver, and the project moves only when the gate is passed, not when someone feels ready.

A quick self-check

Before you order tooling, can you answer yes to all of these?

• A buyer has committed money at my planned price.
• One written document defines the product, the cost limit and the bought-out parts.
• Every open decision has one named owner and a date.
• A design freeze date is agreed in writing.

If two or more are "no", the risk is in the plan, not in the mould.

For the wider set of decisions to close before you commit to a mould, read the Tooling Risk Checklist.

Common questions

When should these decisions be made?

Before design spend begins, and certainly before you request mould quotes. The earlier they are closed, the cheaper each change is.

Who should write the product definition?

The product owner on your side, with input from engineering, quality and purchase. A design agency can help, but the decisions in it must be yours.

What if the market proof does not exist yet?

Then the first piece of work is to get it, with real buyers and a real price. Tooling money spent before that is a bet, not an investment.

Is a design freeze realistic for a new product?

Yes, if it is staged. Freeze the main requirements first, and agree in writing how later changes will be priced and approved.