If your product is moulded, cast or stamped — most plastic parts and many metal components — it needs custom tooling. Tooling is a one-off cost, separate from the per-unit price, and how you handle it shapes both your first invoice and your freedom to change factories later.

Why Tooling Is a Separate Cost

A mould is a precision tool built specifically for your part. The factory cannot produce your design without it, and it cannot be reused for anyone else's product. So it is quoted as an upfront investment, paid once, and then amortised in your mind across every unit it produces. A quote that omits tooling for a custom moulded product is an incomplete quote.

What Drives the Cost

Mould cost is not a single number — it is driven by several factors:

  • Part size and complexity — larger and more intricate parts need larger, more complex moulds
  • Number of cavities — how many parts the mould produces per cycle
  • Mould material — the grade of steel or aluminium, which determines durability
  • Tolerances and surface finish — tight tolerances and fine finishes raise the price
  • Expected volume — a mould built to survive millions of cycles costs more than one built for a few thousand

Single-Cavity vs Multi-Cavity

A single-cavity mould makes one part per cycle; a multi-cavity mould makes several. Multi-cavity tooling costs more upfront but lowers the per-unit price at volume, because each machine cycle yields more parts. The right choice depends on your forecast: pay for cavities you will actually use, not for a volume you only hope to reach.

Tooling and Unit Price Trade Off

A cheaper mould can carry a hidden cost — slower cycle times or shorter life — that shows up in a higher unit price or an early re-tool. Look at tooling and unit price together, against your real production volume, rather than chasing the lowest tooling quote in isolation.

Who Owns the Mould?If you pay for the tooling, the contract must state in writing that you own it — and that the factory will release or transfer it to you on request. Without that clause, a factory can hold your mould hostage, and you cannot move production elsewhere without paying to build it again. "We paid for it" is not the same as "we own it" unless the contract says so explicitly.

Mould Ownership and Switching Factories

The ownership clause is what keeps you free. If the relationship sours, or a better supplier appears, an owned and transferable mould lets you move production with your tooling. A mould the factory effectively controls turns every future order into a negotiation you cannot walk away from.

Maintenance and Lifespan

Moulds wear with use. Agree upfront who maintains the tool, how often, and at whose cost — and what happens when it reaches the end of its life and must be re-cut. A maintained mould holds tolerances; a neglected one quietly drifts until your parts start failing inspection.

Budgeting Tooling into Landed Cost

Amortise the tooling cost across a realistic production run, not a hoped-for one. For large volumes the per-unit impact is small; for a short first run, tooling can dominate your unit cost — which is exactly why a low-volume launch needs the mould cost on the table before you commit, not after.

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