The Australian made Bote-Cote Luci Clear Casting Resin you can use to make river tables and to cast specimens.  It is easy to make castings 50mm or more deep in a single pour, without any residual trapped air bubbles to spoil the work. Bote-Cote Luci Clear Casting Resin has very little heat generation during cure.  Our customers tell us it is the clearest, most water like clear epoxy casting resin they have seen.