How to Prepare DXF Files for Laser Cutting

A clean DXF file is the quickest route to an accurate quote and a correct part. Problems in the file, such as the wrong scale or broken outlines, mean the part has to be redrawn or, worse, is cut wrong. Use this checklist before you send files to any laser cutting shop.

The DXF checklist

1. Draw at true 1:1 scale in millimetres. A common problem is a file that opens 100 times too large or too small because the drawing units or a dimension scale factor were set wrongly. Check that a known dimension measures correctly when the file is opened.
2. Use closed outlines. Every cut shape should be one continuous closed loop with no gaps between line ends.
3. Remove duplicate and overlapping lines. The laser will cut a doubled line twice, which wastes time and can damage the edge.
4. Keep only cut geometry. Delete dimensions, title blocks, notes and centre lines, or put them on a separate layer.
5. One part per file, or clearly separated parts. If several parts share a file, leave space between them and label each one.
6. Name each file clearly. Include the part name, material and grade, thickness and quantity, for example Bracket-A_MS250_6mm_Qty20.dxf.
7. Send a PDF drawing as well. It confirms the dimensions, quantities and any folds, threads or finishes that a DXF cannot show.

Files we accept

DXF and DWG files are best. We also accept AutoCAD and SOLIDWORKS files. For tube laser jobs, a drawing, SOLIDWORKS model or cut list with profile sizes and lengths works well.

No drawing yet?

If you have a sketch, a sample part or an idea, our 3D modelling and design service can prepare cut-ready DXF and STEP files for you.

Want to know what affects the price once your files are ready? Read our laser cutting cost guide.