LET'S RESIN Silicone Putty Mold Making Kit — 1 lb (40A) Fast-Set, High-Temp Flexible Molding

LET'S RESIN Silicone Putty is a two-part, reusable mold-making compound that mixes by hand to create flexible, high-temperature resistant molds for resin, soap, wax, clay, and more.

This 1 lb (40A) silicone putty kit arrives as two colors—part A (blue) and part B (white)—that you knead together in equal amounts to form an instant molding compound. With a short working window and quick demold time, the kit is built for makers who need fast, reliable impressions without specialized tools. The material is flexible, odorless, and tolerates temperatures up to 392°F (200°C), making it suitable for a broad range of craft and prototype applications.

How quickly can I make a mold with this putty?

The putty is formulated for speed: you get roughly five minutes of workable time after mixing and most molds are ready to demold in about 15–20 minutes. That pace keeps small-batch projects moving and reduces downtime between iterations.

• Work time: ~5 minutes after mixing equal parts.
• Demolding: typically 15–20 minutes for full cure.
• No heating, tools, or clamps required—mix and press by hand.
• Quick turnaround ideal for iterative prototyping and multiple small molds.

What materials can I cast in these silicone molds?

Once cured, the silicone produces flexible, non-stick cavities compatible with many casting materials. The high heat tolerance also allows for pours that require elevated temperatures, expanding your material choices beyond cold-set compounds.

• Resin (epoxy, polyester, UV) and resin-based jewelry pours.
• Soap, wax and candle embeds—suitable for hobby batches.
• Clay, plaster, concrete for small forms and miniature parts.
• Prototyping uses like gaskets, seals, model parts, and restorations.

How easy is this kit for beginners and which tools are needed?

The kit is designed for makers with no prior mold-making experience. There’s no requirement for mixers, measuring cups, or stir sticks: simply divide, knead, and press. That minimal setup keeps the learning curve shallow and workspace clutter-free.

• Mix by hand—no extra equipment required.
• Equal parts A (blue) and B (white) for simple measuring by weight or volume.
• Safe and odorless formula—good for small indoor workspaces.
• Reusable scraps can often be re-kneaded for small patches or tests.

Who is this for? LET'S RESIN Silicone Putty is aimed at hobbyists, jewelry makers, modelers, educators, and small-scale makers who want fast, tool-free mold creation. It's also useful for designers and prototypers needing quick impressions for testing form and fit. If you need quick demold times, flexibility, and broad material compatibility without investing in bulk silicone supplies or equipment, this 1 lb kit is a practical, beginner-friendly choice.

If you have specific project questions—like recommended resin types, small-object best practices, or tips for capturing fine detail—reach out to LET'S RESIN customer support for tailored guidance and troubleshooting.