Make your silicone mold online
🎉 Launch offer: make your mold for FREE until 30 September. No payment needed.
Turn your sculpt into a 3D-printable silicone mold in minutes. Upload your STL, see a free 3D preview of your mold, then download print-ready files.
BETA: the Mold Maker is new and we're improving it all the time, so features and results may change. Always check your free preview before paying, and tell us if anything looks wrong.
How it works
- Upload your sculpt — STL, OBJ or PLY. Masks, busts, heads, hands, gloves and props.
- Choose your mold — a pour-cast mold with a core at the exact silicone thickness you want, or a brush-on mold.
- Check the free 3D preview — spin it, open the two halves, adjust the split and the opening.
- Download — both mold halves, the core, a build report and casting instructions, ready to print.
Two kinds of mold
| Mold | What you get | Price |
|---|---|---|
| Pour cast | Two bolt-together halves, a core that sets your silicone wall thickness (e.g. 2.5 mm), pour funnel and air vents | £14.99 (free during launch) |
| Brush-on | Two bolt-together shell halves you brush silicone into | £9.99 (free during launch) |
Why makers use it
- Exact wall thickness — every mold comes with a report measuring the silicone gap.
- Smart split — the halves are split along the direction with the fewest undercuts.
- Air vents placed on every high point where bubbles get trapped.
- Files with holes are sealed automatically.
- Slanted bases (like a neck cut at an angle) are levelled automatically, so chins and jaws stay in the mold.
- Made by a prop maker and used for the masks and props in this shop.
Questions
What printer do I need? Any FDM or resin printer. PLA or PETG works well for the molds and core.
What size can I upload? Models from 2 cm to 120 cm across, files up to 150 MB, in millimetres, centimetres, metres or inches.
How long does it take? Molds are built one at a time, so if others are ahead of you, you'll see your place in the queue.
Do I own my files? Yes. Your upload and your mold files are deleted from our server after 14 days. Only upload models you own or have the right to use.
Can other people see my model? No. Each upload gets its own secret link, and nobody else can see your model or your mold unless you share that link.
Prefer to do it yourself in Blender? The same engine is available as the Silicone SFX Props MoldMaker Pro add-on for Blender, £59.
Rather we make the mold or the cast for you? Send us a request.
By using the Mold Maker you agree to our Mold Maker terms, privacy and refund policy.