Abstract: An assembly for creating die stone castings for dental restoration (inlays, crowns, and fixed bridges) comprising (a) a die pin setter comprising a flexible plastic tube or rod positionable in substantially super-imposed relation above the curvilinear array of cavities in a dental impression formed of elastic material, (b) a die pin holder comprising a series of bifurcated clips each forced down over the plastic tube in press-fit relation but nonetheless accommodating rotation of each clip in respect to the plastic tube into generally coaxial relation with an adjacent impression cavity, and (c) a dual dowel or die pin unit associated with each clip with at least one upper pin of the unit press-fit in depending relation into a blind bore of the associated clip locating two lower dowel or die pins in the adjacent impression cavity. The depending association between each clip and its dual pin unit allows relative rotation to aid in properly orienting the two lower die pins in the adjacent impression cavity.