Cylinder Seal Studio

What is Cylinder Seal Studio?

Cylinder Seal Studio turns a flat image into a relief wrapped around a cylinder, like an old cylinder seal or a pattern roller. You drop in a PNG, JPEG, WebP, GIF or BMP up to 20 MB, or load the sample, then set the threshold and edge softness, invert it so white becomes the design, and mirror it so a roller stamps the right way round. An optional seam band gives the roller a continuous edge.

You choose whether the lines are raised or carved in, and the body: solid, a through-hole for an axle, or a hollow shell with open ends. You type the cylinder diameter, height and relief depth in millimeters (the default is 12.7 mm across, 40 mm tall with 0.8 mm relief) and pick a mesh quality. The app shows the circumference, triangle count and file size, and suggests 3 to 4 perimeters and about 30% infill for a working roller.

The download is a manifold binary STL in millimeters, or a smooth SVG sized to the circumference and height for a laser cutter. Everything runs in your browser and the image is never uploaded. It is free with no account, and the code is MIT licensed. High-contrast line art gives the cleanest relief, and the README advises test-printing bores and walls first.

What you can make

• Relief rollers that stamp your artwork
• Cylinder seals
• Rollers with an axle hole
• Wrapped SVG artwork for laser cutting

How to use Cylinder Seal Studio

1. Drop in a black-and-white image or load the sample
2. Set threshold, invert and mirror
3. Choose raised or carved relief, the body type and the size
4. Click Download STL and slice it