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Aluminium Trihydrate can be added to casting resins at an approximate maximum percentage of 200% by weight (e.g. 200g of filler powder to 100g of resin). Our Aluminium Trihydrate Filler Powder is compatible with all popular casting resins, including polyurethane, epoxy and polyester.




Cabosil is a thixotrope which when added to resin and gelcoat will make them non drip. It can also be used as a thickener in Pros-Aide or Pro-Key to produce transfers.


Heavy Granule Filler used to bulk out PU Resins. This can be added to PU resins such as FC54 at up to 100% by volume, reducing both shrinkage and the heat build up when the resin cures, cutting material cost.