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+86 133 9281 9446
+86 133 9281 9446
When requesting a quote for aluminum CNC machining, providing complete and accurate information is crucial. It ensures not only a precise quotation but also a smoother production process, minimized lead times, and optimized costs.
At Kaierwo, we specialize in rapid prototyping and low-volume manufacturing with a strong focus on aluminum CNC machining. To help you get started, this guide details everything you need to prepare before requesting a quote.
1. 2D Drawings and 3D CAD Files
Format:
Accepted formats include STEP (.stp, .step), IGES (.igs), STL (.stl), DWG, DXF, or PDF for technical drawings.
Why it matters:
3D CAD files define geometry and dimensions. 2D drawings specify critical tolerances, surface finishes, threads, and key technical requirements that are not visible in 3D files.
Tip: The more precise your files, the faster and more accurate your quotation.
2. Material Specifications
Material Type:
Specify the aluminum grade (e.g., 6061, 7075, 2024, 5052, etc.).
Special Requirements:
If you require specific certifications (RoHS, REACH), or materials with enhanced properties (anodizing-grade, high-strength alloys), please indicate.
Note: Different aluminum alloys have varying machinability, strength, and cost.
Prototype or Production:
Are you looking for a single prototype, small batch, or larger volume?
Impact on pricing:
Pricing scales with quantity due to setup costs, material usage, and tooling.
Accurate quantity information allows us to recommend the most cost-effective production process, whether CNC machining, vacuum casting, or rapid tooling.
4. Tolerance Requirements
Standard Tolerance: ±0.05 mm unless otherwise specified.
Tight Tolerance Areas:
Indicate critical features that require tighter tolerances (e.g., ±0.01 mm for mating parts or assemblies).
Why it matters:
Tighter tolerances impact machining time, tool selection, inspection methods, and overall cost.
5. Surface Finishing Requirements
Common Finishes for Aluminum:
Anodizing (clear, black, color options)
Sandblasting
Powder coating
Brushed finish
Polishing
Chemical film (chromate conversion)
Specify:
Type of finish, color codes (e.g., Pantone or RAL), gloss level, and functional requirements (e.g., corrosion resistance, aesthetic appearance).
6. Threading and Tapped Holes
Indicate clearly:
Thread type (e.g., UNC, UNF, Metric)
Thread size
Thread depth
Mark threaded areas on the technical drawing.
Tip: Incomplete thread specifications are a common cause of delays in production.
7. Assembly or Post-Processing Requirements
Assembly:
Do parts require assembly, fitting, or welding?
Post-Processing:
Heat treatment, additional machining, or inspection reports (FARO, CMM, etc.).
8. Lead Time Expectations
Standard lead time: Usually 3–7 days for prototypes, 7–15 days for small batch production.
Expedited service: Available upon request. Please specify if you have tight deadlines.
9. Shipping and Delivery Preferences
Shipping Method: DHL, FedEx, UPS, air freight, sea freight.
Destination: Provide full shipping address with zip/postal code.
Customs Requirements: If specific documents (CO, Form E, packing list) are needed, mention upfront.
10. Budget Constraints (Optional)
If you have a target budget, sharing it helps us recommend material substitutes, optimize processes, or suggest alternative manufacturing methods to meet cost expectations.
Item | Required | Notes |
2D Drawing | √ | PDF, DWG, DXF for tolerances & threads |
3D CAD File | √ | STEP, IGES, STL for geometry |
Material Specification | √ | Aluminum grade and any special requirements |
Quantity | √ | Prototype, low volume, or production |
Tolerance | √ | Standard or tight tolerance |
Surface Finish | √ | Anodizing, sandblasting, powder coating, etc. |
Thread/Assembly Details | √ | Thread specs, assembly needs |
Lead Time | √ | Standard or expedited |
Shipping Info | √ | Address, method, customs needs |
Budget (Optional) | × | For cost-optimized solutions |
Fast Turnaround: Prototypes in as fast as 3 days.
High Precision: Tolerances up to ±0.01 mm.
Flexible Production: From one-off prototypes to thousands of parts.
Comprehensive Finishing: Anodizing, powder coating, polishing, and more.
Quality Assurance: 100% inspection with detailed reports.
Global Shipping: Reliable delivery worldwide.
Ready to get started? Submit your CAD files and project details to info@cnkaierwo.com. Our engineering team will respond within 12 hours with a detailed quotation.
Aluminum CNC Machining Services
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