Tooling
Who owns the tool — and what happens when you change a drawing
By the Good Partner production and sourcing team. 8 min read.
The question that is always asked too late
Tooling ownership and modification cost are settled at order one, and discovered at order two — usually after a supplier has quoted a change as a full new tool. The cost difference between a modification and a new tool is substantial.
What tooling ownership means
In custom packaging, a customer-specific tool is usually built to that customer's drawings. The reasonable expectation is that the tool belongs to whoever paid for it, is not produced for anyone else, and is either stored for you or returned. Some suppliers retain tooling and argue that the material and maintenance are theirs. Both arrangements exist commercially. What matters is that it is stated in writing at the start rather than assumed.
Why changes become expensive
A drawing change sounds small. It may not be. A change to wall thickness alters the cooling and the fill. A change to a decoration area requires new screens, plates or pads. A change to a closure interface can affect the fit of the body, the cap and the decoration all at once. And a change after tooling has run in production, mid-life, is harder than the same change before the tool is cut — the tool may need modification rather than replacement, and that has its own cost and lead time.
The clause worth having
Three things in writing before the first order: who owns the tool; what happens to it if the relationship ends; and how a drawing change is priced and how quickly it can be implemented. Without the third, a change mid-life becomes an argument.
A practical habit
Version your drawings and never let production run against an unstated version. A drawing circulated by email without a revision number is a source of dispute, not a specification. Put the revision on the drawing itself, and confirm in writing which revision a production run is against.
Asking the right question early
When you are comparing suppliers, ask what a drawing change costs and how long it takes. A manufacturer answers from experience. The answer also tells you whether they have actually made changes before — which is the more important signal.