Single Line Fonts for Beginners: Everything You Need to Know
If you just bought a laser engraver or pen plotter and your text output looks wrong — stitched, wobbly, double-stroked, or slow — single line fonts are the answer. This guide explains everything a beginner needs to know.
The problem you're probably having
Most beginners try to use a regular font (downloaded from Google Fonts or bundled with their machine software) and the result is disappointing: the machine traces two lines for each stroke (the outline), leaving hollow letters. Or the output is slow because the machine is processing thousands of tiny path segments. Or the text looks jagged because the bezier curves have too many nodes for the machine controller to process smoothly. All of these problems have the same solution: single line fonts designed for machine output.
What you need
You need three things: (1) single line font files — open-path SVG fonts where each letterform is a single stroke; (2) a way to compose text and export a machine-ready file; (3) a way to optimize the path data for your specific machine. Pathhaus provides all three: a library of 50+ SLF fonts, a browser-based Studio for text composition and export, and automatic path optimization tuned to your machine type.
Your first project
Start simple: a single word at a large size (50mm cap height) on scrap wood or paper. Go to pathhaus.com, sign up for free, and open Studio. Type your word, select a font, set the size to 50mm, choose the Laser or Plotter preset, and export as SVG. Import into LightBurn or your machine software, set the layer to Line/Score mode, and run with conservative settings (slow speed, low power). Adjust from there. Once you see how clean single-line output looks compared to outlined fonts, you won't go back.
Common beginner mistakes
Don't use "Engrave" or "Fill" mode for single-line fonts — use "Line", "Score", or "Draw" mode. Don't download TTF fonts and expect them to work as single-line fonts — TTF fonts are always double-stroke outlines; only purpose-built SLF fonts are single-stroke. Don't ignore node count — high-node fonts will cause machine stutter regardless of your speed/power settings. And don't try to cut vinyl with open-path fonts — you need closed outlines for vinyl cutting.
Try it in Pathhaus Studio
Free to start — optimize and export your first font file in under 5 minutes.