Multipart3D
Free online STL splitter
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Multipart3D is a free online STL splitter. Open an STL or a painted 3MF, cut it into parts that fit your 3D printer, add connectors so the pieces go back together, and export the parts for your slicer. There is nothing to install, no account, and no upload: the model stays in your browser tab from start to finish.
PH · launched Nov 12, 2026 · 1 upvote (top 65%) · 0 views
Niche: 3d printing software and utilities · 42 launches, 5 in the last 7 days · Explore this niche →
Category and tags
- Manufacturing
- Workflow automation
- Prosumer
- Not AI
- Commercial product
- Developer Tools
- 3D Modeling
Visit website ↗ Source listing ↗
More like this: all 42 launches in 3d printing software and utilities →
Could you build this?
Partial The UI and file import/export are vibe-codeable, but cutting watertight meshes, placing alignment connectors, and keeping parts printable requires real computational geometry work that AI-generated code will often get wrong.
What it would actually take: A browser stack would use three.js for rendering and a geometry kernel such as manifold (WASM) for boolean cuts and mesh repair, with a 3MF parser for painted models. The hard parts are robust boolean operations on imperfect meshes, generating connector geometry with tolerances that actually fit, and validating that parts print. That calls for a developer comfortable with computational geometry and 3D printing workflows.
Competitors
Other products that read as similar to this one : 268 launches clear the similarity bar, closest 8 shown.
Attention rank: #84 of 269 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 341 days after the earliest competitor.
- SpinSlicer · ph · 2026-11-13 · 1 upvotes · similarity 0.51
- EasyToSTL · ph · 2026-10-11 · 2 upvotes · similarity 0.51
- FreeSTLFiles · ph · 2026-11-04 · 1 upvotes · similarity 0.51
- pdfonl9 · ph · 2026-10-29 · 2 upvotes · similarity 0.48
- ilove3d · ph · 2026-09-22 · 2 upvotes · similarity 0.47
- Creality Cloud · ph · 2026-09-30 · 1 upvotes · similarity 0.47
- 3dfileconverter.online · ph · 2026-10-05 · 1 upvotes · similarity 0.46
- QR3D Craft · ph · 2026-11-11 · 1 upvotes · similarity 0.44
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.