11-08-2009, 03:10 AM
i can get about a good 4-5 pulls out of a 1 gallon if poured to a medium thickness . the reason for the 2 part mold is due to needing to take it off the armature . then you'll strap the mold so it's a 1 piece for pouring masks or some people have been known to make another layer of plaster on the outside of the mold once it's strapped to make it a 1 piece for good so it's easier to work with . if you're making resin busts then that's really the only reason to need a 2 piece mold . mike,