Built by makers,
for makers.

Why we built this

Every maker has the same story: you need one specific part -- a drawer divider, a mounting bracket, a cable clip -- and traditional CAD tools make you pay for that simplicity with an hour of dragging constraints around. We thought the actual hard part (the geometry, the manifold checking, the export) should be instant, and the only thing left for you to do should be deciding what the part actually needs to be.

So we built a generator that treats every model as a set of parameters instead of a blank canvas. Change a number, watch the model update in real time, export the moment it looks right. No CAD experience required, and no compromise on the kind of file a real printer or production line can actually use.

What we care about

Watertight, manifold-safe exports by construction -- not by hoping the slicer is forgiving. Speed, because seeing every change instantly changes how you design. And a generous free tier, because the best tool for makers is one they can actually afford to use every day.

Where we're headed

SO3D started as a simple tray generator and has grown into a full organizer designer: 26 base shapes, lids and drawers, ready-made templates, Fill my drawer, Gridfinity bins, shapes traced from a photo, a real-size AR preview and a community showcase of shared models. We're still building in the open, still shipping fast, and still starting every new feature from the same question: does this make it faster to go from idea to printed part?

Questions, feedback, or just want to say hi? Reach out -- we read everything.