The Precision during Mounting Cast by Slurry Water

I spatulated dental stone with slurry water and mounted the cast on the articulator with that plaster. In consequence I had the following results. 1. Using slurry water mixed sediment and water (the top clean part) at the rate of 1:1, if I add water powder ratio, the vertical displacement of cast and upper frame was little. 2. Using slurry water mixed sediment and water at the rate of 1:2, the displacement was as little as the one at the rate of 1:1 in the high water powder ratio. 3. Compared 1:1 with 1:2, using high water powder ratio minimized the displacement. Last time I reported, using low water powder ratio and bad liquidity plaster and moist cast, it get large setting expansion, and if not loading upper frame, it is hard to restore incisal pin to the original state of the incisal table. It is similar to use slurry water. Using slurry water with high water powder ratio, I get good precision compared with using usual plaster. Still more it is related to the shortening time of mounting cast, and to improve the efficiency of dental technical work.