Use a prototype mould when
You still need to learn, measure or correct with moulded parts before freezing the production mould geometry.
Comparison
Prototype mould vs production mould
A production mould is built for repeatable, stable and cost-efficient manufacturing throughout the product life cycle. It therefore requires a mature definition of design, material, tolerances, cooling, automation, maintenance and tool life.
A prototype mould has a different purpose: to obtain representative injection-moulded parts that validate design, material, shrinkage, warpage, assembly, process and CTQ before committing to definitive tooling.
Criteria
Use a prototype mould when
Use a production mould when
Design, material, tolerances, process and volume are defined and the main goal is repeatable manufacturing.
Connect both when
Prototype learning is documented and transferred into the definitive tooling design to reduce launch iterations.
Technical decision
Goal
| Criterion | Use a prototype mould when | Use a production mould when |
|---|---|---|
| Goal | Validate and learn before investing | Manufacture stably across the product life cycle |
| Initial cost | Lower than a complete definitive mould | Higher because of robustness, cavities, cooling and automation |
| Change flexibility | More flexible for design or process adjustments | More limited: each change can be costly and slow |
| Tool life | Aimed at short runs or pre-series | Designed for repetitive production and higher volume |
| Value for P2P | Turns technical uncertainty into measured data | Uses that data to launch production with less risk |
Technical FAQ
Frequently asked questions about prototype and production moulds
What is the main difference between both moulds?
The prototype mould is designed to learn and change; the production mould is designed for repeatable manufacturing across the product life cycle.
When should you avoid going straight to production tooling?
When material, tolerances, warpage, assembly, gate position or potential defects could still require steel modifications.
What should be transferred to the production mould?
Measurements, process parameters, issues, approved changes and CTQ criteria should be transferred to reduce launch iterations.