Convert DWG to GERBER

Understanding DWG and Gerber file formats

DWG is a proprietary binary file format used for storing two- and three-dimensional design data and metadata. It is most commonly associated with AutoCAD and other CAD software. DWG files are widely used in architecture, engineering, and construction for creating detailed technical drawings.

Gerber files, on the other hand, are standard file formats used in the electronics industry to describe the printed circuit board (PCB) images: copper layers, solder mask, legend, and more. Gerber files are essential for PCB manufacturing and are supported by most PCB fabrication software.

Why convert DWG to Gerber?

Converting a DWG file to a Gerber file is necessary when you want to manufacture a PCB based on a design originally created in a CAD program. The conversion process translates the mechanical or electrical design into a format that PCB fabrication machines can interpret.

How to convert DWG to Gerber

Direct conversion from DWG to Gerber is not always straightforward, as they serve different industries and purposes. However, the process generally involves exporting the DWG design to a PCB design tool that supports Gerber export. Here’s a typical workflow:

1. Open your DWG file in a CAD program such as AutoCAD or DraftSight.
2. Export or save the DWG as a DXF file (File → Save As → DXF), as most PCB design tools support DXF import.
3. Import the DXF file into a PCB design software like Altium Designer, KiCad, or EasyEDA.
4. Adjust the imported design to fit PCB requirements (layers, traces, pads, etc.).
5. Export the final PCB layout as Gerber files (File → Fabrication Outputs → Gerber Files in Altium, or File → Plot in KiCad).

Recommended software for DWG to Gerber conversion

• Altium Designer: Professional PCB design suite with robust import/export capabilities.
• KiCad: Free, open-source PCB design tool that supports DXF import and Gerber export.
• EasyEDA: Online PCB design platform with DXF import and Gerber export features.
• AutoCAD: Use for initial DWG editing and exporting to DXF.

For most users, KiCad is recommended due to its free availability and strong community support. The workflow is:

• Convert DWG to DXF in AutoCAD.
• Import DXF into KiCad (File → Import → Graphics).
• Finalize PCB design and export Gerber files (File → Plot).

Tips for successful conversion

• Ensure your DWG drawing uses only the layers and elements needed for PCB fabrication.
• Double-check scale and units during import/export to avoid size mismatches.
• Review the generated Gerber files with a Gerber viewer before sending them to a manufacturer.