Fonts for Vinyl Cutting: SLF, Outlines, and Bubble Fonts
Vinyl cutting is different from laser engraving and pen plotting: for most vinyl work, you need closed outlines, not open paths. This guide explains when single-line fonts work for vinyl and when you need a different approach.
The difference: drawing vs. cutting vinyl
There are two fundamentally different ways to use a vinyl cutter with fonts: cutting vinyl letters (for heat transfer, signage, or weeding) and drawing on vinyl with a pen attachment. For cutting, you need closed outlines — the machine cuts around the perimeter of each letter and you weed away the unwanted vinyl. For drawing (pen plotting), you want single-line open paths — the same as any other pen plotter application.
Single-line fonts for vinyl pen drawing
If your machine has a pen attachment (Cricut pen, Silhouette sketch pen, Roland pen holder), single-line Pathhaus fonts work perfectly. The pen traces each stroke as a single line, producing natural handwriting on paper, card stock, or vinyl. This is ideal for addressing envelopes, writing on gift bags, and creating handwritten-look prints. Use the Plotter or Cricut preset depending on your machine.
Closed outlines for vinyl cutting
For cutting vinyl letters — HTV, adhesive vinyl, or sign vinyl — you need closed outline fonts. These are letterforms with a defined perimeter that the blade cuts around. Standard TTF/OTF fonts are closed outlines by default. Pathhaus is developing a bubble font feature that converts single-line SLF paths into closed outlines by expanding the stroke width into a filled shape — giving you the visual character of an SLF typeface in a cuttable format.
Choosing the right preset for vinyl cutters
For pen drawing on Cricut and Silhouette, use the Cricut preset (epsilon=10). These machines have slower acceleration profiles than laser engravers and benefit from smoother, less complex curves. For professional vinyl cutters (Graphtec, Roland), use the Plotter preset (epsilon=5) for a better balance of curve accuracy and smoothness. Always run a test cut on scrap vinyl before committing to a production run with a new font or size.
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