I finished the mold for the seated winged dog, it took 3 gallons of Rebound 25 rubber and 125# or so of pottery plaster for the shell. I cast the first plaster cast from it tonight, it took almost two 5 gallon pails to fill, and exactly 100# of the Densite plaster. After hollowing it out as much as I could while it was setting, the wet out of the mold weight is 100# So if I figure 19 quarts of water used is about 40#, less what was in the waste from hollowing him out, I’ve noticed about half the weight of water used in plaster casts evaporates, the…