QuickSTL 3D Stencil Maker
Turns a logo or lettering image into a spray stencil with automatic bridges
Opens quickstl.app

About QuickSTL 3D Stencil Maker
QuickSTL's 3D Stencil Maker converts a logo or lettering into a printable spray-paint stencil. You upload an SVG or a high-contrast image and the tool builds a flat plate with your design cut out.
Its key feature is automatic bridging. Enclosed shapes, such as the inside of an O or A, would drop out of a normal stencil, so the tool detects these islands and ties them to the frame with small bridges. You can set the plate thickness, overall size, overspray margin, bridge width and the number of bridges per island, then download the STL for free without signing up.
It suits one-off stencils for signs, shirts, crates and wall art when you already have artwork. For plain typed text, a text-based stencil generator is quicker, since this tool needs an image as input. QuickSTL also runs several other image-to-STL converters on the same site.
What you can make
- Logo stencils
- Lettering stencils from images
- Spray paint templates
How to use it
- Upload an SVG or high-contrast image
- Set thickness, size and overspray margin
- Adjust bridge width and bridges per island
- Download the stencil STL
Good
- Automatic bridges keep letter islands attached
- Adjustable thickness, size, overspray margin and bridge width
- Works with logos as well as lettering
Not so good
- Needs an SVG or image as input, you cannot just type text
- Small, newer site with little community presence
What you'll need to print it
Materials and parts that give the best results with QuickSTL 3D Stencil Maker.
PETG for functional and outdoor prints
PETG handles heat, sunlight and repeated flexing better than PLA, so Gridfinity bins in a hot garage or signs mounted outdoors keep their shape.
- Bambu Lab PETG BasicUpgraded formula that Bambu says matches PLA Basic for strength while staying impact-tough; low price per spool in multi-roll bundles.
- Polymaker PETGHigh-flow replacement for PolyLite PETG: strong, low-odour and quick to print.
- Overture High Speed PETGGood-value PETG in a large colour range for functional parts in bulk.
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