Sketch · Build · Remix · Learn
The editor that opens up
your world to 3D design.
TweakCAD is a parametric 3D design editor that runs right in your browser. Start from a sketch, build it into real solids, export print-ready files, then share and remix with a whole world of makers in the community.
Editor
Sketches, extrudes, holes, patterns. Parametric timeline. Works offline.
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Models
Browse public projects. Remix into your timeline. Lineage attribution preserved.
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Components
Drag-and-drop parametric components (fasteners, bearings, brackets) straight into your design.
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Learn
Documentation and video walkthroughs, from first sketch to print-ready parts.
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Challenges
Time-limited themed contests. Submit your design, get showcased.
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Different from Tinkercad. Different from Cults3D.
We're parametric, not mesh-based. Every component you remix stays editable, and every variant tracks its parameter delta. And the whole stack is open source, free for everyone.
Easier than Fusion 360, more powerful than Tinkercad. see how TweakCAD compares.
- Parametric variantsRemix a design with just parameter changes. We track variants distinctly from structural remixes.
- Learn by remixingStart from a community design, tweak the parameters, and see how it's built. Then make it your own.
- Export anywhereSTEP, STL and 3MF for 3D, DXF and SVG for 2D. Take your design to any slicer, CNC router or laser cutter.
- FreeCAD friendlyOpen your existing FreeCAD parts and keep editing them parametrically, with no flattening to a dead mesh.*
* FreeCAD import is rolling out. It brings in sketches, pads and pockets today, with broader part coverage and round-trip on the roadmap.