CNC Supplier Qualification: An Evidence-Led Audit Guide
Assess CNC suppliers using project-specific requirements, technical audits, verified records, comparable bids and three fillable qualification worksheets.
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About this guide
This 40-page guide helps engineers, buyers and supplier-quality teams assess a CNC manufacturer. A worked sourcing example shows how to check the proposed factory, machining process and records before placing an order.
What’s inside
| Topic | What you will work through | Pages |
|---|---|---|
| Define the qualification scope | Set project requirements and required approval checks; verify supplier claims, certificates and what they cover. | 3–9 |
| Review the technical route | Examine engineering review, subcontractors, traceability, machines, fixtures, people, metrology and capacity. | 10–18 |
| Conduct the audit | Prepare the review, trace evidence, write findings and check corrective actions. | 19–24 |
| Decide which work the supplier is approved to perform | Compare quotations and scoring models, run a qualification trial and define the approved scope. | 25–34 |
| Reuse the assessment worksheets | Record the required checks, supporting records, audit findings and supplier selection decision; consult source notes. | 35–39 |
Fillable worksheets
Pages 35–37 contain three worksheets for project requirements and approval checks, audit records and findings, and the supplier selection decision. They provide 33 fillable fields in total.
Download the PDF and open it in a reader that supports PDF forms. Save a copy after entering your information and reopen it to check that the entries were retained.
How to use it
Define the part, revision, intended use, volumes and required route before comparing suppliers. Use scores alongside verified evidence and unresolved conditions when reviewing a first order.
Related engineering resources
Continue with CNC Prototype to Production and CNC Part Inspection & Quality Acceptance.
Published by VETCNC. Version 1.0 · September 2026 · English.