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Polycraft K2 Polyurethane Casting Resin (Rock Wall Grab Hold Resin)

Polycraft K2 Polyurethane Casting Resin (Rock Wall Grab Hold Resin)
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Our Price:  £12.50(Inc. 20% VAT)(£10.42 Exc. VAT)Earn 12 Loyalty Points

Quick Link Code:  7561
Brand:  Polycraft

Small Wooden Mixing SticksSmall Wooden Mixing Sticks

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Polycraft K2 Polyurethane Casting Resin is designed for high strength applications such as rock wall hold handles and grabs, this resin is very strong and to be used when higher strength applications are required.

Nearly odourless two-component polyurethane casting resin, with a low shrinkage ratio, short demould time and good ability for painting or pigmentation, For castings up to 25mm thick that require quick demould times. Excellent properties. Consisting of two parts A & B, after mixing cures to a very tough polyurethane plastic and great results when cast from silicone moulds.

  • Rock Wall Holds & Grabs
  • Excellent Physical Properties
  • Can Be Pigmented
  • Low Viscosity
  • High Strength
  • Model Making
  • Prototypes
Mix Ratio by Weight 100 A : 100 B
Mixed Viscosity 200 - 300 
Pot Life (200g,  25°C) 6.00 - 6.30 Minutes      
Demould Time 20 Minutes
Shore D Hardness 82 - 86
Flexural Strength Mpa 100 - 105
Cured Colour Cream
Elongation at Break % 4.5 - 5.0
(Tg) (Celsius) 68 - 73

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 and tools and moulds or models are ready to go. Surfaces and air temperature should be above 60°F during application and for the entire curing period. Use 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.

This polyurethane system is recommended over polytek polyurethane if you plan to paint your casted part, plastic primer base coat is advised.

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