Sourcing & quality
Define what will be accepted before production. The supplied product brochure describes material traceability, process monitoring, dimensional checks, visual inspection and functional testing according to application. Project documents should identify drawing revision, approved grade, critical dimensions, wall map, test methods, sampling and change authorization. Request current certificates with the actual holder, validity and scope. Catalogue references to quality systems or machinery conformity do not establish certification of your product.
Project checklist
- Resin grade, data sheet and batch traceability
- Critical interfaces, datums and tolerance
- Nominal wall, minimum wall and inspection map
- Test conditions and pass/fail limits
- Mold ownership, maintenance and change control
- Packed dimensions, protection and destination
Samples, inspection and batch traceability
Sample approval should identify the exact drawing revision, material, colour, assembly and test conditions. Include critical dimensions and minimum wall checks rather than relying only on a signed appearance sample. Decide which inspections apply to every part and which use an agreed sampling plan. Trace resin lot, production batch and approved process records to the shipment. Close sample issues before production approval. Later deviations require written disposition; an urgent delivery date should not silently change acceptance limits.
Read guide ↗Tooling route, ownership and maintenance
Compare tooling routes against geometry, finish, revision risk and expected runs. Do not buy on mold price alone. Record tool identification, ownership, exclusivity if agreed, storage, maintenance, damage responsibility and transfer conditions. Define who approves a repair or geometry change. Separate tool acceptance from sample and production acceptance. A customer-owned tool is an asset with a management process, not simply a line on the invoice. Ask for the latest approved drawing revision with each change request.
Read guide ↗