Prepare Better CAD Data.
Get a Faster, More Accurate Quote.
Download our practical CAD checklist to confirm the files and technical details normally required for a CNC machining quotation. Complete information helps our engineers review manufacturability, identify potential issues and provide reliable pricing with fewer follow-up emails.
- 01 Clearer technical review
- 02 Fewer RFQ questions
- 03 More reliable pricing
CNC Machining CAD Checklist
A concise reference for engineers, designers and purchasing teams.
- 3D CAD file formats
- 2D technical drawings
- Material specifications
- Critical tolerances
- Surface finish requirements
- Quantity and delivery details
PDF format · No registration required
What to Include in Your CNC Machining RFQ
A complete RFQ allows our engineering team to evaluate geometry, materials, tolerances, finishing and production requirements without unnecessary delays or assumptions.
- Faster engineering review
- More accurate and comparable pricing
- Fewer technical clarification emails
- Better process and material recommendations
3D CAD Files
The 3D model is the primary reference for reviewing part geometry, machining access and manufacturability.
- STEP / STP preferred
- IGES / IGS accepted
- Parasolid X_T accepted
- Assembly files when applicable
2D Technical Drawings
Drawings communicate requirements that may not be fully defined in the 3D model.
- Critical dimensions
- Dimensional tolerances
- Threads and hole callouts
- Datums and GD&T
Material and Grade
Specify the exact alloy, temper or plastic grade required for function, appearance and regulatory compliance.
- Material name and grade
- Alloy condition or temper
- Certification requirements
- Approved alternatives, if any
Tolerances and Critical Features
Apply tight tolerances only where function requires them, since tolerance level directly affects machining and inspection cost.
- General tolerance standard
- Critical feature tolerances
- Fits and mating dimensions
- Flatness and positional control
Surface Finish and Treatment
State the finish type, color, texture and any areas that must remain untreated.
- As-machined or bead blasted
- Anodizing type and color
- Passivation or plating
- Required surface roughness
Quantity and Delivery Details
Quantity, delivery timing and destination affect process planning, material purchasing, packaging and shipping.
- Prototype and batch quantities
- Annual estimated demand
- Required delivery date
- Destination country and postcode
Submit both the 3D CAD model and the latest 2D drawing whenever tolerances, threads, surface finishes or inspection requirements apply. When information conflicts, clearly identify which document should be treated as the controlling specification.
Better Information Leads to Better Manufacturing Decisions
A complete RFQ does more than shorten quotation time. It allows engineering teams to evaluate the correct process, identify unnecessary cost drivers and prepare a quotation that reflects the actual functional requirements of the part.
What a Complete RFQ Improves
Engineering Value-
01
Faster Technical Review
Complete models, drawings and specifications allow engineers to evaluate geometry, machining access and production risks without repeatedly requesting missing information.
-
02
More Reliable Quotation
Defined materials, tolerances, quantities and finishes reduce assumptions, resulting in pricing that is easier for purchasing teams to review and compare.
-
03
Better Process Planning
Clear functional requirements help determine the appropriate machine, setup strategy, tooling, inspection method and post-processing route.
When you are unsure which dimensions require tighter control, identify the part function and mating relationships in your RFQ. Our engineering team can review the design and suggest a practical tolerance strategy before production.