DXF for Plasma Cutting
Plasma cutting machines follow DXF vector path data to cut shapes from metal sheet. Clean, simplified DXF paths with single-stroke outlines produce the most accurate plasma cuts and fastest machine operation.
About DXF for plasma cutting
Plasma cutting machines follow vector DXF path data to cut shapes from metal sheet. The plasma torch traces each DXF path as a cut line, so the quality of the DXF directly affects the precision of the plasma cut.
Creating DXF files for plasma cutting: the workflow is vectorize your image or logo to produce clean SVG paths, then export to DXF from Inkscape. For plasma cutting, the DXF must contain single-stroke outlines — not filled shapes. The plasma cutter follows the path outline, not a filled region.
Pierce points and lead-in lines: most CNC plasma software (Hypertherm ProNest, Tekla, SheetCam) adds lead-in lines automatically when importing DXF. The software extends the entry path to avoid pierce marks on the final part edge.
Kerf compensation: plasma cutting removes material equal to the kerf width (typically 1–3mm depending on material thickness and amperage). CNC plasma software applies kerf compensation automatically when importing DXF. No manual path offsetting is required in the DXF file.
Recommended DXF version: R14 or R2000 for widest plasma CNC software compatibility. Both formats support the polyline and spline entities used for plasma cutting paths.
Node density: reduce anchor points before DXF export. Dense nodes cause the CNC controller to generate many short linear segments that slow cutting speed and reduce cut quality on curved shapes. Smooth curves with fewer nodes cut faster and cleaner.