How it works
ThrowGRID is four parts that fit together in one predictable way. Learn the cube and the connector and you already understand the whole system.
Anatomy of a cube
Flat panels that key together
A cube is not printed as one lump. It is a set of flat panels — base, top, two sides and a back — that slide together on tapered keys. Flat parts print faster, warp less and stack better in a parcel, which is why a cube costs what it does.
The keys do the work. Each panel carries a slot; the keys pull them square and hold them there. No screws, no glue, nothing to lose.
Corners are their own part. The rounded corner pieces are what later join one cube to the next — the same geometry doing both jobs.
Open front by design. Nothing between you and the throw. Acrylic covers are on the roadmap for anyone who wants one.
Assembled, it is one rigid box with a rounded corner at each vertex — ready to take a connector on any face.
Pick your cube size
One cube, one throw. Standard 1A for full-size yo-yos, oversized 4A for offstring, or the kendama box. All three share the same outer footprint logic, so they line up in one grid — a mixed collection does not need a second system.
Join them with connectors
Corner connectors bridge the corners of neighbouring cubes and pull them into alignment. Once connected the stack is rigid and behaves as one object. They also form the rounded outer corner you see on a finished grid.
Use the right connector for the job
Three geometries cover every position. Singles finish an outside corner, doubles join two cubes along an edge, and four-corner pieces sit at the interior junctions where four cubes meet. Multi-cube packs already contain the right mix.
Grow in any direction
Add cubes sideways, upward, or both. A 2x2 becomes a 2x3 becomes a 3x3 without replacing a single part you already own — the grid you have is always a corner of the grid you are heading towards.
Coming later
None of these are on sale. They are the next things we want to make, and they will all fit cubes you buy today.
Acrylic front covers
Laser-cut acrylic fronts to seal a cube against dust while keeping the throw fully visible. Acrylic rather than printed plastic, for real optical clarity.
LED lighting
Backlit panels to wash each cube from behind, daisy-chained across a grid from a single supply. Prototyped, not production-ready.
Ikea board mounts
Brackets to hang a grid straight onto an Ikea pegboard, so a wall build needs no drilling and no wall damage.
Ready to build one?
The 4-cube pack is the honest first purchase — four 1A cubes and the connectors to join them into a 2x2.
See the 4-cube pack