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 and skips risky connector locations.

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, risky hole positions are skipped, and larger external pegs export as separate printable parts; matching negative faces get sockets.