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Polyethylene Fibres are used to thicken polyurethane rubbers and plastics for making brushed moulds and shells. Turns a pourable mould rubber or plastic into a brushable system with any level of thickening desired. Thickened plastics can be used to create thin, lightweight, laid-up castings
You Can add enough for your desired level of thickness. A 5% mix by total weight of mixed liquids will give a highly thixotropic mix.
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