Patent ID: 10821668

Abstract:
An additive manufacturing apparatus that includes a vat configured to receive a radiant-energy-curable resin and a method for using the vat. A floor defines at least a first portion and a sump wherein the first portion is above the sump. The first portion defines a build surface, at least some of which is transparent. A stage is positioned facing the build surface and is configured to hold a stacked arrangement of one or more cured layers of the radiant-energy-curable resin. One or more actuators are operable to change the relative positions of the vat and the stage. A radiant energy apparatus is positioned adjacent to the vat opposite to the stage and is operable to generate and project radiant energy on the radiant-energy-curable resin through the floor of the vat in a predetermined pattern. The additive manufacturing apparatus also includes a cleaning apparatus operable to transfer debris from the build surface to the sump.