Casting mold generator
Generate a printable casting mold around a model in your scene — a two-part box with registration keys and a pour hole, or a single open-faced press block
Upload an STL, OBJ or 3MF and get the mold for it: a block with your model hollowed out of it, split so the casting can come back out, keyed so the two halves line up the same way every time, and opened by a pour hole placed on a measured high point rather than guessed at. Print it once in PLA or PETG and cast silicone, wax, resin, plaster, soap or chocolate as many times as you like. The part that decides whether any of it works is where the mold splits, so it measures your model and puts the seam where the casting releases — and tells you, before you print, when a shape is undercut and cannot come out at any height. Choose a two-part box to pour into, or a single open-faced block to press clay and soap into. The file is read in your browser, so there is no upload to wait for. Download a print-ready STL or 3MF.
How the Casting mold generator works
What you can adjust
- Mold — Two-part box · Open face
- Side wall — 1–100 mm
- Base & roof — 1–100 mm
- Shrink allowance — 0–10 %
- Split height — 0–1000 mm
- Registration keys — 0–4
- Key size — 1–30 mm
- Key clearance — 0–2 mm
- Cut a pour hole
- Pour hole — 1–60 mm
- Vents — 0–4
- Vent size — 0.5–20 mm
- Pour hole reach — 0.5–40 mm