Free DXF Files — Laser, CNC & Plasma Ready

What a DXF file is, and when to use it

DXF (Drawing Exchange Format) is a vector format Autodesk published in 1982 so CAD programs could exchange geometry. It stores lines, arcs, circles, polylines and splines as coordinates — no pixels — so a machine can follow the paths at any size without quality loss.

Reach for DXF when your toolchain is CAD- or CNC-oriented: LightBurn, RDWorks, AutoCAD, Fusion 360, QCAD, SheetCAM and every plasma or router post-processor take DXF directly. Reach for SVG instead when you cut on a Glowforge or drive the machine from a web app — those expect SVG.

The one thing to watch: a DXF file has no built-in unit. The number "10" could mean 10 mm or 10 inches depending on who drew it. Always set the unit on import and sanity-check one dimension.

Which format does your machine want?

Importing a DXF without surprises

• Set the unit first — pick millimetres (or inches) in the import dialog before the geometry lands, then measure one feature you know to confirm the scale.
• Close the paths — run auto-join / close open shapes so each part is a fillable outline, not a set of loose lines.
• Remove duplicates — DXF exports often stack two identical segments; delete them so the laser does not cut the line twice.
• Assign layers to operations — put cut, score and engrave geometry on separate layers or colours and set power/speed per layer.
• Do a test cut — on an offcut of the real material, at the real thickness, before committing the full sheet.

Common DXF import errors and how to fix them

• Open paths — a shape whose start and end node do not meet. The laser treats it as a line, not a fillable outline, so it will not cut a closed part. In LightBurn, Edit → Select open shapes highlights them; Auto-join enabled paths (tolerance ~0.05 mm) closes small gaps.
• Overlapping or duplicate lines — two segments stacked on the same path make the laser cut or score twice, widening the kerf and scorching the edge. Run "Delete Duplicates" / "Remove overlapping lines" before cutting.
• Wrong scale on DXF import — DXF carries no unit, so a file drawn in millimetres can land as inches (25.4× too big) or vice versa. Set the import unit explicitly and check one known dimension against a ruler.
• Live text instead of paths — if the design uses a font you do not have installed, the text reflows or disappears. Files here ship with text already converted to outlines; if you edit text, convert it to a path before cutting.
• Stray nodes and tiny artefacts — single points or sub-millimetre shapes left over from tracing. They register as pierce points and leave burn marks. Delete anything smaller than your beam diameter.

How this library is tested

Every design here is added by hand through the site's own admin tools, not accepted as an open public upload — so nothing reaches the library without a person choosing to publish it. The upload step enforces a server-side whitelist on both file extension and MIME type (DXF, SVG, AI, CDR, EPS, PDF) and a 50 MB size cap per file, which rejects the wrong file type or a corrupted upload before it is stored.

What this does not include yet: an automated geometry check for open paths, duplicate lines or wrong scale. There is no such checker in the codebase today — that class of problem is caught by eye during upload, not by software. Run the DXF import checklist above (or the vector-checking steps in your own editor) as your real safety net, especially on anything you plan to cut unattended.

DXF files by machine, material and category

Free DXF Files — FAQ