How to Export .STEP, .AI, .DWG, .EPS, and .DXF Files? A Complete Guide for Fabrication & Laser Cutting
In sheet metal fabrication, custom manufacturing, and prototyping, exporting files in the correct format ensures accurate cutting, bending, and assembly. Whether you're working with stainless steel, mild steel, or cast iron, file compatibility matters for production quality.
This guide explains how to correctly export .STEP, .AI, .DWG, .EPS, and .DXF files while ensuring they meet fabrication, CNC machining, and laser cutting requirements.
Why Exporting CAD Files Correctly Matters
Proper export ensures accurate cutting, bending, welding, and fabrication. Incorrect export settings often result in missing layers, scaling issues, or incompatible geometry.
1. Exporting .STEP Files
STEP (.stp/.step) is a universal 3D CAD format ideal for transferring solid models between different software platforms.
How to Export a .STEP File:
- Open your CAD software (SolidWorks, Fusion 360, CATIA, etc.)
- Load your model
- Go to File → Save As / Export
- Select STEP (.stp / .step)
- Adjust tolerance & geometry settings
- Click Save
2. Exporting .AI Files
AI files are used for 2D laser cutting, engraving, and branding.
How to Export .AI:
- Open Adobe Illustrator
- Go to File → Save As
- Select AI format
- Adjust artboard & scaling
- Save
3. Exporting .DWG Files
DWG is widely used for engineering drawings and fabrication layouts.
How to Export .DWG:
- Open AutoCAD / SolidWorks / Fusion 360
- Go to File → Export
- Select DWG
- Select target version
- Save
4. Exporting .EPS Files
EPS is commonly used for vector engraving and branding.
How to Export .EPS:
- Open Illustrator, AutoCAD, or CorelDRAW
- File → Export
- Select EPS format
- Set vector & resolution settings
- Save
5. Exporting .DXF Files
DXF is the most common file format for CNC machining, sheet metal cutting, bending, and fabrication.
How to Export .DXF:
- Open AutoCAD / Fusion / SolidWorks
- Go to Save As / Export
- Select DXF
- Choose version (R12 recommended)
- Save
Choosing the Right File Format
- .STEP: 3D CAD models & assemblies
- .AI: Vector engraving / cutting
- .DWG: Engineering drawings
- .EPS: Branding / vector graphics
- .DXF: CNC machining & laser cutting
Common Export Issues
- File not opening? Select correct version.
- Missing layers? Check layer export settings.
- Distorted vectors? Enable high resolution.
- Large STEP files? Simplify geometry.
Conclusion
Understanding file formats and export settings ensures smooth production workflows, accurate cuts, and high-quality sheet metal parts.
When exporting for fabrication, always verify compatibility with your laser cutting or manufacturing provider.