04-06-2005, 04:08 PM
i have no clue what some of these guys are talking bout..but plaseter of paris is crap and dwellign for a hour is not needed. i pour a mold and right back out,then either use air or water to pop bubbles then i pour more back in and dump and let drain for 10 minutes then pour again and right back out i get a good thickness.. the longer dwell can casue more shrinkage in the piece..My advice if your molding a sculpted use ultracal and if ur makign a mold on a master then use hydrocal or recently i have used #1 pottery plaster