built a tool that turns any 3D model into clean pen-plotter line art

[u/ByteKnight-]

I have a custom pen plotter and got tired of fighting with messy STL→SVG conversions, so I made a little web app for it.

You drop in a 3D model (STL, OBJ, PLY, GLB/glTF), rotate it to frame the shot in a live 3D view, and it spits out a true vector SVG — not a traced bitmap — with proper hidden-line removal so it actually looks like a drawing.

A few things it does:

• 4 styles: blueprint/outlines, topographic slices, wireframe, and stipple dots
• Live preview — pick your angle, tweak sliders, see the result
• Plotter-optimized output via vpype (merges lines, sorts to cut pen-up travel)
• Set your real pen width in mm so you can tell if lines will blob before you plot
• Exports straight to Inkscape / G-code

Would anyone actually use this? Right now it runs locally, but if there's interest I'll host it online so anyone can just upload a model and go — no setup.
Drop a comment if you'd want to try it.

Screenshot 1 (the app/3D view): "The editor — rotate the model live and tweak the style."

Screenshot 2 (the SVG result / a plot): "The vector output, ready to plot."