STENCIL TO STL
Convert a Stencil Image to STL
Turn connected stencil shapes into a clean extrusion with adjustable thickness and scale.
SOURCEstencil image
→R3D
→STLSTL
THE WORKFLOW
Convert a Stencil Image to STL, without starting from scratch.
This browser workflow converts stencil image into STL by tracing a contrast mask and extruding its contours. You control the physical width, depth, edge rounding and optional backing plate before export.
Refine the threshold, contours and dimensions in the live preview
Download the STL and check it in your slicer
BETTER INPUTS
Get a stronger starting model
Tips for your stencil image
- Start with a large, high-contrast source
- Use the threshold and invert controls to isolate the right shapes
- Increase cleanup only enough to remove speckles
Before you send it to a printer
- Use a backing plate for disconnected elements
- Keep the thinnest feature wider than your nozzle line
- Verify orientation and scale in your slicer
OUTPUT FORMATS
Continue with the format your workflow needs.
STL
QUESTIONS, ANSWERED
About stencil to STL
Is the converter free?+
Yes. Uploading, editing and previewing are free. A Reforgers account is required to download the STL.
Does my image leave my browser?+
No. This extrusion tool processes the image locally in your browser.