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ResourcesDesign GuidesDesign Guide: Sheet Metal Fabrication

Design Guide: Sheet Metal Fabrication

Use our free guide to learn how to optimize your designs for sheet metal fabrication by following our best practices for key design elements, including bend radii, feature spacing, material selection, and more.

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Optimizing custom part designs for sheet metal fabrication requires careful consideration of various factors. These include material inputs, general tolerancing, finishes, bend dimensions and radii, inserts, welding, and more.

We've compiled our best design tips into this guide to help you understand the sheet metal fabrication process, key design considerations for optimizing your parts for manufacturing, and Xometry's sheet metal services.

Table of Contents

Overview

  • What is Sheet Metal Fabrication?
  • Types of Sheet Metal Forming

Tolerances & Standards

  • General Manufacturing Standards
  • Geometry-Dependent Tolerances

File Formats for Sheet Metal

  • 3D CAD Formats
  • 2D DXF Requirements

Sheet Metal Design Guidelines

  • Wall Thickness
  • Holes and Slots
  • Bends
  • Curls and Countersinks
  • Hems
  • Relief Cuts
  • Notches and Tabs
  • Corner Treatments

Finishes & Post-processing

  • Mechanical & Chemical
  • Surface Treatments
  • Anodizing & Conversion Coatings
  • Metal Plating
  • Paints and Coatings
  • Part Marking

Hardware & Assembly

  • Welding
  • Brazing and Soldering
  • Mechanical Fastening

Additional Resources

  • Stock Sizes and Gauge Lookup Chart
  • Stock Material Thickness Tolerances
  • Additional Xometry Resources

About Xometry

Xometry offers instant pricing for manufacturing, including precision CNC Machining, 3D Printing, injection molding, Urethane Casting, and Sheet Metal services. Xometry also provides live engineering support from our team of experts. Upload a 3D CAD file to get an instant quote.

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Joel Schadegg
Hey, I’m Joel, a technical content writer at Xometry! I have made it my personal mission to help customers like you get the most out of the Xometry experience and achieve success on your projects by leveraging my hands-on experience running machines, processing parts, and ensuring order fulfillment.

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