Engineering-oriented CNC machining support
CNC Machining RFQ Checklist for Buyers
A practical checklist showing what buyers should send for an accurate CNC machining quote, including drawings, CAD files, material, quantity, finish, tolerances, heat treatment, delivery details, and inspection requirements.
RFQ preparation
Why a Complete RFQ Package Matters
CNC machining is drawing-based work. A 3D model shows geometry, but it does not always define tolerances, material grade, thread details, surface finish, heat treatment, or critical inspection requirements. A complete RFQ reduces unclear communication and helps identify drawing questions before quotation.
Buyer checklist
CNC Machining RFQ Checklist
| RFQ Item | Why It Matters | What to Provide |
|---|---|---|
| 2D drawings | Defines dimensions, tolerances, threads, notes, and inspection points | PDF drawing with revision level and critical dimensions |
| 3D CAD files | Confirms geometry and supports machining review | STEP or another neutral CAD file where possible |
| Material | Affects machining, finishing, strength, cost, and inspection | Material grade or open material question |
| Quantity | Affects setup, unit price, inspection scope, and lead time | Prototype quantity, production quantity, or both |
| Surface finish | Affects dimensions, appearance, corrosion protection, and lead time | Finish type, color, masking, marking, and coating-sensitive dimensions |
| Tolerance requirements | Controls machining and inspection effort | General tolerances plus critical dimensions |
| Heat treatment if required | Can affect hardness and dimensions | Hardness target, process note, and inspection expectations |
| Delivery destination | Affects logistics and schedule review | Country, region, or delivery address if available |
| Target lead time | Helps evaluate schedule feasibility | Required delivery date or target shipment window |
| Critical dimensions or inspection requirements | Focuses review on functional features | Mark fits, datum surfaces, holes, bores, shafts, threads, and report needs |
Quotation details
Information That Supports RFQ Review
2D Drawings and 3D CAD Files
2D drawings define dimensions, tolerances, threads, notes, surface finish, and inspection requirements. 3D CAD files help confirm geometry and support machining review, but they should not replace the drawing when functional notes matter.
Material, Quantity, and Surface Finish
Material grade, order quantity, and finish requirements affect machining route, unit price, lead time, and inspection scope. If the material is not fixed, describe the part function and working environment.
Tolerances, Heat Treatment, and Inspection Requirements
Critical dimensions, datum references, bores, shafts, threads, surface finish, heat treatment, and inspection report needs should be marked clearly before quotation.
Delivery Destination and Target Lead Time
Delivery destination and target schedule help review logistics, finishing time, inspection time, and shipment planning.
Clarification points
Common RFQ Gaps That Delay Quotation
These gaps do not prevent a project from being reviewed, but identifying them early can reduce follow-up questions.
- Only sending a 3D model
- Missing material grade
- Unclear finish requirements
- No quantity or future volume
- No critical dimensions marked
- No delivery destination
- No heat treatment note
- No inspection report expectation
- Old drawings without revision notes
Before quotation
Before You Send the RFQ
If some information is not finalized, state what is open. KENDORIC can review the available files and identify which material, tolerance, finishing, or inspection details should be clarified before quotation.
Ready to Send Your RFQ Package?
Share your drawings, CAD files, material, quantity, finish, tolerance requirements, inspection needs, delivery destination, and target lead time for engineering review before quotation.
Email Your RFQ Package