3D printing with variable voxel sizes

A method of providing differing light beams in a multi-scale stereolithography apparatus, the method comprising:

• providing, using a light source, an original light beam for curing a resin on a resin tank to create a portion of a fabricated part, including narrowing the original light beam through one or more lenses prior to modifying the original light beam;
• subsequent to narrowing the original light beam, adjusting, using a processor, a dynamic aperture to a first aperture;
• projecting, using the light source, the original light beam through the first aperture to form a second light beam with a first beam dimension and onto the resin;
• adjusting, using the processor, the dynamic aperture to a second aperture by moving a linear or rotary stage supporting the dynamic aperture based on a toolpath adapted to optimize resolution or speed along an XY plane of a layer of the fabricated part;
• projecting, using the light source, the original light beam through the second aperture to form a third light beam with a second beam dimension and onto the resin, wherein the first beam dimension is smaller than the second beam dimension and wherein projecting the second light beam or third light beam onto the resin comprises focusing the second light beam or the third light beam onto a mirror directed onto the resin;
• and
• controlling a direction of the second light beam or the third light beam by using the mirror to cure resin onto a portion of the fabricated part along the XY planar direction.