This polyurethane D70 casting resin is Fast system, that works well for very small up to moderately small castings, prototypes.
EasyFlo 90 Casting Resin - All Kit Sizes – brickintheyard
FMSC - Fast-Cast Polyurethanes
Polyurethane Casting Resin D70 Quick Set - /en
Polyurethane Casting Resin D80 Kit - /en
EasyFlo 60 Black- casting plastic Shore D65
2 lb Kit : MPK-70 -180 Sec : 2 Part Polyurethane Casting Resin
Model-Pro Casting' Resin Gallon Kit Polyurethane System
Enduro SOFT - Soft Rubber Casting Resin - Simple Resin
2 Part Polyurethane Casting Resin - Easy to Tint and
Polyurethane Casting Resin – Solid Solutions
Castin' Craft FastCast™
TC-800 Casting Resin Fast Set - All Kit Sizes – brickintheyard