Molding compound, PoYo® Putty 40, silicone. Sold per pkg of (1) 2-lb and (1) 0.13-lb jar.

PoYo® Putty 40 is a two-part mold-making silicone putty that can be mixed and applied directly to almost anything--even on vertical surfaces--and capture the finest detail. It has been time-tested to make molds of antiques, archeological models, sculptures, prototypes, picture frames, coins and more. PoYo® Putty 40 can be applied in a 1cm layer, so less putty does more, resulting in lightweight, easy-to-handle molds. Use the mold over and over with jewelry resin, metal clay and polymer clay.

The resulting silicone rubber can also be used as a repair material. It will stick to itself and to other silicone rubbers (such as some Oh! Ring™ components or silicone molds). To use:

• Mix 20 parts of Jar A (2-lb or 0.91kg jar) with 1 part of Jar B (0.13-lb or 60g jar) by folding Jar A putty around Jar B putty. Use vinyl gloves only; exposure to latex will inhibit cure time.
• Knead aggressively until a uniform light-pink color is achieved, eliminating all color streaks. Step-by-step instructions included in package.
• PoYo Putty 40 will only harden once it is mixed with its curing agent (Jar B). Cure time is approximately 30 minutes.
• Store and use putty at room temperature (73 degrees Fahrenheit / 23 degrees Celsius).