Inspection and Traceability for Build-to-Print Parts
Inspection should be planned from the drawing and the function of the part. A generic promise of “high precision” does not define which characteristics are measured, how they are accepted or what records accompany an order.
This page describes the information CNCX Tech requests during RFQ review. Specific inspection methods, records and traceability are available only when an approved manufacturing and quality workflow is identified in the quotation.
Start With Controlled Requirements
- Part number, drawing revision, units and applicable customer standards
- Datums, GD&T and clearly identified critical characteristics
- Material specification, condition and required source documentation
- Heat treatment, coating, cleaning and post-process dimensions
- Sampling, report format, retention and change-control requirements
Match the Method to the Characteristic
Diameter, length, runout, roundness, straightness, thread, roughness and hardness are different characteristics. They may require different instruments, fixtures, environmental controls and acceptance rules. A method must be appropriate for the feature size, tolerance, datum structure and production condition.
Documents Must Be Quoted, Not Assumed
If a project needs a material certificate, certificate of conformance, first-article package, customer report format or characteristic-specific inspection record, state it in the RFQ. CNCX Tech does not represent that every document is included by default.
Traceability Scope
Traceability may involve the material source, manufacturing batch, special-process batch, inspection record, packaging and shipment. The required level depends on the customer specification and the controls actually available in the approved supply chain.
Questions to Resolve Before Quotation
- Which characteristics affect fit, motion, life or safety?
- What measurement method or customer format is required?
- Is sampling allowed, or is a characteristic-specific full check required?
- What certificate scope and record-retention period apply?
- Which changes require customer notification or approval?
For a complete request, use the RFQ checklist. If the drawing requires controlled handling, review NDA and drawing IP requirements first.