How to Prepare a Vector File for Laser Cutting
Most failed cuts trace back to file problems rather than the machine. Run through this list before you cut.
Published by the Heartline Works team · Last reviewed 2026-10-02 · Editorial policy
- Set the document to real units (millimetres or inches) and confirm the size.
- Convert text to outlines so fonts do not change.
- Close open paths where a closed cut is intended.
- Remove duplicate and overlapping lines to avoid cutting the same line twice.
- Delete stray points and tiny fragments.
- Separate cut lines from engraving areas using the layer or colour convention of your software.
- Test on scrap with the same material and thickness.
Details that fail in real material
- Bridges thinner than the material’s strength allows will burn out or snap.
- Inside corners cannot be sharper than the cutter’s spot or bit.
- Joints must allow for kerf and material thickness.
The Vector Validation Tool on this site checks for open paths, duplicates, tiny geometry and unsafe content, but cannot know your material or machine.
Frequently asked questions
What line width should I use?
It depends on your software; many drivers treat very thin “hairline” strokes as cut lines. Check your machine’s documentation.