TC-808 Polyurethane Casting Resin
TC-808 is a fast-setting, rigid polyurethane casting resin designed for producing hard, tough castings with excellent detail reproduction. With a very low mixed viscosity of approximately 200 cPs, TC-808 flows easily into moulds and fine details, making it an excellent choice for model making, prototypes, reproductions, props and small production castings. Once cured, TC-808 produces a white, opaque casting with a Shore 78D hardness and a tough, thermoplastic-like feel. Its rapid cure allows many castings to be de-moulded in under 30 minutes, making it particularly useful when multiple parts need to be produced quickly.
TC-808 mixes 1:1 by weight, making small batches straightforward to measure. Its short 2–2.25 minute working time means your mould, tools and materials should be prepared before mixing. TC-808 can also be poured in stages or rotationally cast where required, as freshly mixed material readily bonds to itself. It is generally insensitive to moisture during and after cure, although good polyurethane handling and storage practices should always be followed.
Also available in Black as TC-808 Jet Black.
Recommended for:
– Model making and reproductions
– Prototypes and pattern making
– Props and decorative castings
– Small production runs
– Detailed silicone moulds
– Rigid parts and components
– Castings where a thermoplastic-like feel is desired
– Applications requiring a fast de-mould time
Properties
– Mix Ratio by Weight: 1 part A to 1 part B
– Mix Ratio by Volume: 90 parts A to 100 parts B
– Work Time: 2–2.25 minutes (100 g mass @ 25°C)
– De-mould Time: Approximately 10–20 minutes @ 25°C*
– Hardness: Shore 78D ± 2
– Mixed Viscosity: 200 cPs @ 25°C
– Colour: White/Opaque
Product Highlights:
– Very low viscosity for excellent flow into detailed moulds
– Rapid setting for fast production and turnaround
– Cures to a hard, tough rigid polyurethane
– Shore 78D hardness
– White, opaque finished casting
– Thermoplastic-like feel
– Readily bonds to itself when stage pours are required
– Generally insensitive to moisture during and after cure
– Excellent choice for detailed reproduction casting
– Convenient 1:1 mix ratio by weight
Important Processing Information
TC-808 is a very fast-setting polyurethane, so we recommend having your mould, mixing containers and tools ready before combining Parts A and B. Once mixed, you will have approximately 2–2.25 minutes of working time at 25°C.
*De-mould time will vary depending on the size and thickness of the casting. While TC-808 generally reaches a demouldable state within 10–20 minutes, thin sections may require considerably longer in the mould. Sections less than approximately 3 mm (1/8″) thick may require an hour or more before de-moulding.
Part B should be thoroughly remixed before each use until it is uniform in appearance. Polyurethane components are sensitive to moisture during storage, so containers should be kept tightly sealed and exposure to humid air minimised.
Always refer to the Technical Data Sheet and Safety Data Sheet before use.
