Blitz mass
Blitz compound is a two-component polyurethane resin, which is very thinly liquid . It is used as casting material in model making, namely as prototype material for both the workpiece and the mould. Blitz mass can be milled and turned extremely well. Furthermore, it hardens quickly (demoulding time 20 minutes). Blitz mass can also be used to cast electronics, making them vibration-free and waterproof. For more info, see; https://www.v-sure.eu/en/products/polyurethane/pu-casting-resin-coating/