Accepting 2D/3D Drawings for Custom Tooling & Extrusion Inquiries
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Technical Guide February 22, 2025 5 min read

How to Prepare 2D/3D Drawings for Fast and Accurate Aluminum RFQs

A practical checklist of required dimensions, tolerance callouts, alloy grades, surface specifications, and file formats for rapid quote turnaround.

Why Complete Drawings Accelerate Your Quotation

Incomplete engineering information often leads to prolonged back-and-forth emails and delayed quotes. Submitting clean 2D and 3D files with explicit manufacturing notes enables our engineering team to provide precise tooling costs, extrusion pricing, and fabrication breakdowns within 24–48 hours.

Essential Information Checklist for RFQ Drawings

  • 3D CAD Model: STEP (.step / .stp), IGES (.igs), or SolidWorks (.sldprt) for volume calculation and CNC toolpath assessment.
  • 2D Dimensioned Drawing: PDF or DWG/DXF indicating critical dimensions, GD&T tolerances, and datum references.
  • Alloy and Temper: Specify exact alloy (e.g. 6063-T6, 6061-T6) rather than generic "Aluminum".
  • Surface Finish Specification: Indicate coating type (Anodized, Powder Coated, PVDF), target film thickness, RAL color code, and visible decorative faces.
  • Fabrication & Secondary Operations: Detail secondary cutting lengths, CNC hole diameters, thread pitch, and weld symbols.
  • Estimated Order Volume: Specify initial prototype quantity and expected annual batch order volumes.
  • Packaging Requirements: State custom export crate requirements, individual barcoding, or special interleaving needs.
Tip: Clearly mark non-critical dimensions with standard tolerances (e.g. EN 755-9) and reserve tight decimal tolerances (e.g. ±0.05mm) only for critical mating interfaces to minimize production costs.
Custom Engineering & DFM Review

Have an Engineering Question on this Topic?

Contact our engineering team with your 2D/3D CAD files or specification questions for direct technical assistance.

STEP / IGES / DWG / PDF
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