A press for use by either right or left-handed persons, having a press cavity defined between a stationary base and a movable curvilinear wall member for manually receiving a bagged amount of mercury and amalgam mixture. A resilient yieldable turning element is operably connected to the base and a movable wall for progressively advancing the wall member towards the base to pressably engage the bagged mixture so that the mixture is forced through fibers or cloth of the bag in a condition ready for dental use. A globe encases the press to contain released vapors and a well is disposed beneath the press to collect excess mercury or amalgam during the pressing procedure.