Polycraft F38 offers excellent impact resistance, is very low viscosity with a thermoplastic aspect. With a low shrinkage ratio, short demould time and good ability for painting, this resin is widely used within the small prototype and scale model industry. The F38 has  a pot life of 2 minutes and a demould time of 20 - 25 minutes with a full cure of around 72 hours.

Fast Demoulding Time
Easy-To-Use
Low Chemical Attack Towards Silicone Moulds
Good Ability For Being Painted

Applications include : Patterns, Negatives, Castings, Models, Vacuum forming tools, prototypes, mock-ups, decorative parts etc

Each kit will come with the same weight in each container, but part A comes with a filler powder additive, therefore increases the volume, both part A and B are different volumes, therefore the resin must be measured by equal weights, shake well before use.

Before use, be sure that Parts A and B are at room temperature 20-25­°c and tools and moulds or models are ready to go. Surfaces and air temperature should be above 20°c before application and for the entire curing period. Use metal or plastic mixing vessels and spatulas to avoid introducing moisture (i.e., with paper or wood tools).

Measure equal weights of part A and part B into a mixing container such as a polyethylene pail. Mix immediately, thoroughly scraping sides and bottom for one minute. Pour mix into mould cavity. Once the containers of Parts A and B are opened, they should be used or resealed tightly as atmospheric moisture contamination may cause foaming of the plastic. Shake well before use.

Mix Ratio by Weight : 100 A : 100 B
Mixed Viscosity mPas : 35
Pot Life (200g,  25°C) : 2 Minutes
Demould Time : 20 Minutes
Shore D Hardness : 72
Flexural Strength Mpa : 48
Flexural Modulus Elasticity : 750 mpa
Maximum Casting Thickness : 5mm - 10mm
Glass Transition Temp : 55°C