Description
PoYo™ Putty 40 is a two-component mold-making silicone that adheres to vertical surfaces and captures fine details. Tyis makes it suitable for quickly creating durable rubber molds of antiques, sculptures, and more.
PoYo™ Putty 40 can be used for casting wax, gypsum, and various resins.
Features
- Use Less – Do More: Applied as a thin layer, reducing material usage and cost.
- lightweight: Molds are lightweight and easy to handle.
- Adjustable Pot Life and Cure Time: Pot life and cure time can be adjusted by varying the amount of Part B catalyst.
- User-friendly: Can be measured and mixed by volume without a scale.
- Versatile: Adheres to itself and other silicone rubbers, offering multiple application options or use as a repair material.
Technical Properties
- Mix Ratio By Volume: 20A:1B
- Mix Ratio By Weight: 100A:6B
- Working time: 3 minutes
- Cure Time: 30 minutes
- Shore Hardness: 40 A
- Specific Gravity: 1.30 g/cc
- Specific Volume: 0.77 cm³/g
- Color: Light Pink
- Tensile Strength: 3.10 MPa
- Elongation @ Break: 250%
- Die B Tear Strength: 14.9 kN/m
- Useful Temperature Range: -54°C to 204°C
- Shrinkage: 0.003 mm/mm
- Mixed Viscosity: Putty
Use Cases
Used for making molds of valuable antiques, archeological models, sculptures, prototypes, candles, picture frames, coins, and more. Suitable for casting wax, gypsum, and various resins.
Instructions
A small test application is recommended to determine suitability for your project if performance is in question.
Safety
- Use in a properly ventilated area. Wear safety glasses, long sleeves, and rubber gloves to minimize contamination risk. Use vinyl gloves only, as latex gloves will inhibit the cure of the rubber.
Storage
- Store and use material at room temperature (23°C). Warmer temperatures will reduce working and cure time and decrease the shelf life of unused material. Use as soon as possible due to limited shelf life.
Applying A Sealer
- May be inhibited by sulfur-based clays, resulting in tackiness. A small-scale test is recommended. Apply a barrier coat of clear acrylic lacquer if inhibition occurs.
Applying A Release Agent
- Not usually necessary, but a release agent like Ease Release™ 200 can make demolding easier. Brush the release agent over all surfaces, follow with a light mist coating, and let dry for 30 minutes.
Measuring
- Pre-knead Part A for one minute before mixing with Part B for easier mixing.
- By Weight: Weigh 100 parts A and 6 parts B.
- By Volume: Mix ratio is about 20A:1B. Measure Part A to the size of a golf ball and Part B to the size of a small marble.
Mixing
- Fold Part A around Part B and knead until a uniform light-pink color is achieved, ensuring all color streaks are eliminated.
Applying the Rubber
- Apply directly onto model surfaces except skin. Maintain a 1 cm (3/8”) thickness. Connect and smooth seams of different batches together.
Curing & Performance
- Allow the mold to cure for 30 minutes at room temperature before removing. Adjust Part B amount to change cure time.
Applying A Support Shell
- Molds may need a support shell made of Plasti-Paste™ or Matrix NEO™ and chopped fiber.
Using The Mold
- Silicone rubber molds have natural release characteristics, but mold lubricity may deplete over time.
