A method of forming a three dimensional object, comprising: providing a volume of photo-curable resin (32;52) contained within an optically transparent resin container (38;54), a z axis (42;60) extending through the volume of photo-curable resin (32;52) and an x' axis (41;61) extending normal to the z axis (42;60); using an optical subsystem (34;56) to generate an optical two dimensional projection (36;58); causing the optical two dimensional projection or the resin container (38;54) to rotate relative to the other to receive the optical two dimensional projection (36;58) around a complete circumference of the volume of photo-curable resin (32;52) while maintaining the optical two dimensional projection (36;58) directed through the volume of photo-curable resin (32;52), wherein rotating the two dimensional projection or the resin container (38;54) to move relative to the other comprises a) mounting the resin container on a rotating mount or stage and physical rotation of the resin container about the z axis, or b) rotating the optical subsystem circumferentially about the resin container to direct the optical two dimensional projections toward the volume of photo-curable resin from the plurality of angles while the resin container is held stationary, or c) using a rotating arm assembly having a plurality of mirrors (64,66,68) configured to direct the optical two dimensional projections toward the volume of photo-curable resin while the resin container and the optical subsystem are both held stationary, and wherein a two dimensional projection function of the optical two dimensional projection (36;58) is controlled at each angle θ to deliver a controlled three dimensional exposure dose over a fixed temporal exposure period, and where a plurality of two dimensional projections is generated from a plurality of angles θ, and where the plurality of two dimensional projections are summed to produce a three dimensional exposure dose in the volume of photo-curable resin (32;52) which is sufficient to cause photocuring in desired regions, while being insufficient to cause photocuring in undesired regions. providing a volume of photo-curable resin (32;52) contained within an optically transparent resin container (38;54), a z axis (42;60) extending through the volume of photo-curable resin (32;52) and an x' axis (41;61) extending normal to the z axis (42;60); using an optical subsystem (34;56) to generate an optical two dimensional projection (36;58); causing the optical two dimensional projection or the resin container (38;54) to rotate relative to the other to receive the optical two dimensional projection (36;58) around a complete circumference of the volume of photo-curable resin (32;52) while maintaining the optical two dimensional projection (36;58) directed through the volume of photo-curable resin (32;52), wherein rotating the two dimensional projection or the resin container (38;54) to move relative to the other comprises a) mounting the resin container on a rotating mount or stage and physical rotation of the resin container about the z axis, or b) rotating the optical subsystem circumferentially about the resin container to direct the optical two dimensional projections toward the volume of photo-curable resin from the plurality of angles while the resin container is held stationary, or c) using a rotating arm assembly having a plurality of mirrors (64,66,68) configured to direct the optical two dimensional projections toward the volume of photo-curable resin while the resin container and the optical subsystem are both held stationary, and a) mounting the resin container on a rotating mount or stage and physical rotation of the resin container about the z axis, or b) rotating the optical subsystem circumferentially about the resin container to direct the optical two dimensional projections toward the volume of photo-curable resin from the plurality of angles while the resin container is held stationary, or c) using a rotating arm assembly having a plurality of mirrors (64,66,68) configured to direct the optical two dimensional projections toward the volume of photo-curable resin while the resin container and the optical subsystem are both held stationary, wherein a two dimensional projection function of the optical two dimensional projection (36;58) is controlled at each angle θ to deliver a controlled three dimensional exposure dose over a fixed temporal exposure period, and where a plurality of two dimensional projections is generated from a plurality of angles θ, and where the plurality of two dimensional projections are summed to produce a three dimensional exposure dose in the volume of photo-curable resin (32;52) which is sufficient to cause photocuring in desired regions, while being insufficient to cause photocuring in undesired regions.