How to Prepare Files for CNC Plasma Cutting (And Avoid Costly Delays)

When it comes to CNC plasma cutting, the quality of your finished parts starts long before the torch ever fires. Clean, well-prepared files save time, reduce errors, and keep production moving smoothly.

If you’re submitting files for plasma cutting, here’s what you should know.

1. Use the Right File Format

DXF files are the industry standard for CNC plasma cutting. Whenever possible, submit files in DXF format created at a 1:1 scale. Avoid PDFs or screenshots unless discussed in advance.

2. Remove Duplicate or Overlapping Lines

Duplicate geometry can cause the machine to retrace cuts, leading to poor edge quality and unnecessary wear on consumables. Before sending files, clean up overlapping lines and stray points.

3. Keep Designs Simple and Cut-Ready

Plasma cutting works best with clean paths and consistent geometry. Extremely small holes, tight internal corners, or excessive detail may require design adjustments to cut properly.

If you’re unsure, we’re happy to review files and recommend changes before production.

4. Confirm Material Thickness

Designs should account for the material thickness being cut. Kerf width, hole size, and tolerances all change depending on material and gauge.

Providing material specs upfront helps avoid rework later.

5. Label Quantities and Notes Clearly

If you’re ordering repeatable parts or production runs, clearly note quantities, revisions, and any critical tolerances. This allows us to build consistent workflows and deliver repeatable results.

Clean files mean faster turnaround, better parts, and fewer surprises. If you’re unsure whether your files are ready, we’re always happy to take a look before cutting begins.