Engineering guide
Prototype to Production for Ceramic Components
What actually changes between the first part and a production order, and where continuity is usually lost between batch one and batch two.

Stages
The three stages and what each proves
A prototype is one part made to prove the design works, a pilot batch is a small run made to prove the process is stable, and production is the repeat order where the process has to prove it repeats. A prototype is quoted separately from production because the route and the fixturing differ at that stage, and its typical lead time is 7 to 10 working days after drawing approval. The drawing is reviewed before any price is issued, so what is achievable is settled before production begins, and a change made at drawing review is absorbed into the quotation rather than charged as a new approval cycle.
- 1PrototypeOne part, made to prove the design works.
- 2Pilot batchA small run, made to prove the process is stable.
- 3ProductionThe repeat order, where the process has to prove it repeats.
Lead times run from drawing approval rather than from enquiry: 7 to 10 working days for a prototype, 2 to 3 weeks for a pilot batch, 4 to 6 weeks for production, depending on quantity and material.
| Stage | What it proves | Typical lead time |
|---|---|---|
| Prototype | The design works | 7 to 10 working days after drawing approval |
| Pilot batch | The process is stable | 2 to 3 weeks |
| Production | The process repeats | 4 to 6 weeks, depending on quantity and material |
Where batches diverge
Ceramic parts rarely fail because one part is wrong. They fail because batch two is subtly different from batch one.
- Material grade and, where relevant, the supplier lot
- Grinding sequence and fixturing concept
- Datum scheme and inspection method
- Process parameters recorded at first article
- Change control before any adjustment is made
The cost of a late change
| Change point | Consequence |
|---|---|
| At drawing review | Absorbed into the quotation |
| After first article | New approval cycle and inspection |
| During production | Partially completed work is affected |
| At incoming inspection | Most expensive; already shipped |
What carries across the stages
Where the work is done


Frequently asked
Have a drawing that this guide applies to?
Send it with the material and the quantities. The review confirms what is achievable before any price is issued.
