Fibercast - Por-A-Kast Mark II is mixed 1:1 by volume, begins to gel in approx 2 mins, cures to a rigid (Shore D73) White plastic at room temp (72F-75F).
Low viscosity/shrinkage, pours like water, reproduces in minute detail.
Produces lower exothermic temp than Mark I.
Net weight 4 lbs
2 quart kit

Data Sheet
MSDS