SVG to STL converter for 3D printed letters
Drop in a vector and get a manufacturable 3D sign kit at exact millimetre scale: back plate, perimeter body with a retaining lip, and the acrylic face. Free preview below — no account needed.
- Real 1:1 mm geometry, not a decorative extrusion.
- Mechanical joints: perimeter collar, retaining lip and clearance.
- Binary STL per part plus DXF for the acrylic face.
- Runs client-side: your vector never leaves the browser during preview.
Live SVG to STL preview
Runs in your browser at true scale (1 mm = 1 mm). No sign-up, no upload to a server. Preview only — STL and DXF downloads happen in the editor.
drag: orbit · scroll: zoom · units in mm
Downloads open in the full editor with all fabrication parameters.
How the SVG to STL conversion works
- 01Upload your SVG (logo, letter or number outlines).
- 02The engine reads the real millimetre footprint — no forced scaling.
- 03Set wall thickness, wall height, retaining lip and clearances.
- 04Preview the exploded 3D assembly in the viewer.
- 05Open the editor to download binary STL per part and DXF for the acrylic face.
Why a generic 3D converter is not enough
Most online tools extrude the outline and stop there. A channel letter needs a back plate with a perimeter collar, a body wall with a front lip so the acrylic cannot fall out, clearance between mating parts, and kerf compensation for the laser-cut face. Corporeas3D generates those features parametrically, so what you print and cut actually assembles.
Frequently asked questions
- Does the converter keep my SVG dimensions?
- Yes. The engine reads the SVG viewBox and units and builds the model at 1:1 millimetre scale. Nothing is scaled to fit the viewport, so a 300 mm letter exports as 300 mm.
- What comes out of the conversion?
- A parametric sign kit: back plate with a perimeter collar, perimeter body with a retaining lip, and the acrylic face profile. Each part exports as a binary STL, and the acrylic face also exports as DXF for laser cutting.
- How do I prepare the SVG?
- Use closed outlines (convert strokes to shapes), keep counters such as the inside of an A or O as subpaths, and avoid strokes thinner than about 8 mm — there is no room for wall plus acrylic below that.
- Is kerf and clearance handled?
- Yes. Encastre clearance, kerf compensation and the acrylic negative offset are parameters you control in the editor, so printed and laser-cut parts fit without sanding.
- Is it free?
- The 3D conversion and preview are free and need no account. Downloading the STL and DXF kit requires a free sign-in.
Ready to fabricate?
Open the editor, tune thickness and clearances, and export a binary STL per part plus the DXF face.
Open the editor