A toolbox that runs entirely in your browser — nothing is uploaded anywhere. Load an STL to inspect it, scale it, estimate cost, and (the fun part) turn it into a sand castle mold: a printable negative you pack with wet sand and flip over at the beach.
Drop an STL file here, or click to choose one
Binary or ASCII STL · stays on your device
Drag to orbit · scroll to zoom · right-drag to pan. Rotate the model so it stands “up” the way it should sit on the sand before generating a mold.
Exports include any rotation/scaling you applied here. Units are millimeters (standard STL convention).
Generates a printable negative of your model — a bucket-style mold. Pack it with wet sand, flip it over, lift, and your model appears in sand. The generator views the model from above (overhangs are automatically filled in, just like a real sand mold requires), and the result prints flat-side-down with zero supports.
Rule-of-thumb estimate (walls ≈ 15% of solid volume plus infill). Your slicer has the final word.
No STL? Make one. Each generator loads its result into the workspace above, where you can scale it, price it, export it — or turn it into a sand mold.
Turn a photo into a relief that reveals the image when backlit. Print in white, 100% infill, standing vertically.
A scannable QR code as a printable plaque, previewed in its print colors. Multi-filament printer (Bambu AMS etc.)? Download the two-STL version below, import both files as one object, and assign white/black filaments.
Raised text on a plate — keychain tag, label, or a mirrored stamp. Sand-mold it to write names in sand.
Handy for “is there enough left on this spool?” moments.