STL Bed Splitter

Browser-only STL chunker. Upload an STL, enter bed constraints, scale it to the requested bed/chunk volume, generate bed-sized parts with dowel/socket alignment, then export a ZIP of printable STL chunks.

Upload STL

Bed X

Bed Y

Bed Z

Target beds/chunks

Clearance margin

Preferred split strategy

Dowel diameter

Dowel depth

Socket clearance

Dowels per seam

Export dowels as separate printable pegs; put holes in both model halves Add alternating zigzag/keyed seam features

Set diameter/depth/count to 0 for automatic sizing. Auto mode now uses fewer, larger, centered blind holes.

Scale Auto-scale model to use the requested bed/chunk volume before splitting

STL files do not store reliable units. This scales the actual mesh coordinates before export.

Load an STL to begin.

Notes: This uses client-side CSG and works best on manifold STL solids. Extremely dense, self-intersecting, open, or non-manifold files can fail or take a long time. For production, move the CSG work to a server-side geometry kernel.

Mouse: orbit / zoom / pan. Generated parts are colored by chunk. It targets the requested chunk count. By default, chunks get centered shallow blind holes and larger external pegs export as separate printable parts; matching negative faces get sockets.