Design 3D parts you can actually print
Manifold booleans keep every model one watertight solid, so it goes straight into your slicer with no mesh repair.
For when simple shapes aren't enough
Beginner 3D modeling applications are built around snapping basic shapes together, and it's easy to outgrow them. The professional packages can do far more, but they take months to learn, and far more to master. CubbyCAD sits in between. It opens quickly and stays approachable, and underneath there's a 3D sketcher, SDF sculpting, voxels, and a scripting language for the projects that need them.
What's in the toolbox
Twelve ways to add and shape geometry, from dragging in a primitive to scripting a part.
Shape building
Drop in shapes, combine them, or cut holes. Manifold booleans keep the result one clean, watertight solid.
Read the guideSmooth blends
Round off sharp corners, or drop shapes into an SDF group to blend them into something organic.
Read the guideSketch in 3D
Draw on any face or the ground, then extrude or revolve it into a solid. It all happens in 3D.
Read the guideSculpt it
Push and pull an SDF surface like clay. Edits sit on a layer, so you can clear it and start over.
Read the guideScript parts
Write a part in JavaScript or TypeScript, and its settings turn into sliders you can adjust.
Read the guideRig & pose
Add a skeleton, bind your model to it, and pose it. Useful for characters and toys.
Read the guideModifiers
Stack smoothing, remesh, and simplify on any part, and reorder them whenever you like.
Read the guideImport stuff
Bring in STL, OBJ, and GLB files, or drop in a reference photo to model against.
Read the guideExport & print
Export STL, STEP, glTF, or PLY, or slice a part for 3D printing right in the browser.
Read the guideCommand palette
Press Space and type what you want. Every tool is searchable, so there's no menu hunting.
Read the guideSave anywhere
Save to your browser, a folder on disk, or sign in to sync to the cloud.
Read the guideSmooth blends, not just hard edges
Put shapes in an SDF smooth group and they merge in a smooth, blended way instead of a hard seam. Mechanical hard-surface parts and organic shapes can live in one model.
Script a part, get sliders
Write a part in code and its parameters turn into sliders. Change a value and the model updates as you watch. Public parts can be embedded on any page to configure and download.
Open it and start building
Save to your browser, to a folder on your disk, or sign in to sync across devices.