Before casting our final plaster, we made a test about a difficult area in our mold.
Moreover we tested at the same time the two kinds of plaster we have (Modulo EPFL/ Eldelweiss). We looked about the weight, the resistance and the details' precisions ans that's why we tested an area with many edges.
Photo of the mold
Photo of the both plasters (left in Modulo EPFL / right in Edelweiss)