Free · in the browser · no install
Turn any model into acasting mold
We accept STL, OBJ and 3MF.
We don't store your models or share them with anyone.
Generators below
What you cast
Pick a tool
Every generator is free. Not sure where to start — take the multi-part plastic mold.
Silicone molds
PopularHow it works →- Silicone
How it works →- Silicone
How it works →- Silicone
Multi-part molds
Casting resultHow it works →- Silicone
Casting resultHow it works →- Silicone
Casting resultHow it works →- Plaster
Casting molds
Beginner pickHow it works →- Plastic
- Cast right away
Other tools
Soon- Plastic
And this is it in your hand
The mold prints on an ordinary FDM printer and takes wax, soap, resin, plaster or concrete. The keys, the seam and the pour channel are already where they belong — nothing to work out.
- InputSTL · OBJ · 3MF, up to 100 MB
- OutputSTL · 3MF, slicer-ready
- Your fileSent only to be computed, never stored
- Sign inOnly to download
How it works
Three steps to a casting
- 1
Upload a model
STL, OBJ or 3MF. The model opens in your browser — rotate and set it up without sending anything. No CAD needed.
- 2
Turn the knobs
Wall thickness, seam, pouring hole, clearance. The result is recomputed on the fly — no account needed.
- 3
Sign in and download
The finished STL or 3MF is handed over after you sign in: email and password.
Questions
Good to know
Is it really free?
Yes. Every tool works without payment: 3 downloads a week. A paid plan raises the limit and grants the right to sell what you print.
Do I need an account?
To build a mold and inspect it in 3D — no. Signing in is only needed to download: your free limit is tied to it. An email and password is enough.
Do I have to install anything?
No. It all runs right in the browser — no software, no extensions, no account until you download.
Can my models leak?
Only what is stored somewhere can leak. We do not store your models anywhere: no archives, no backups, no training on your files. Until you press Generate, the model never leaves your browser.
What do I get in the end?
Print-ready parts in STL or 3MF: the mold halves, the keys and the pouring hole are already in place.
May I sell what I cast?
Not on the free plan — personal use only. A commercial licence comes with Pro and Studio.
What if my model is not watertight?
The tool says so in plain words and offers to repair it — instead of a cryptic error.
Your next model is one click away
Nothing to install: pick a mold type and build it right now.
Choose a mold type →