Methods and apparatuses for casting polymer products

A system for molding a photocurable material into a planar object, the system comprising:

• a first mold structure;
• a second mold structure;
• a plurality of protrusions disposed on at least one of the first mold structure or the second mold structure;
• and
• a plurality of linear slots defined on at least one of the first mold structure or the second mold structure,
• wherein a first slot of the plurality of slots extends in a first direction, wherein a second slot of the plurality of slots extends in a second direction, and wherein the first direction is not parallel to the second direction, and
• wherein the system is configured, during operation, to produce a polymer film by performing operations comprising:
• positioning the first and second mold structures such that:
• at least some of the plurality of protrusions insert into at least some of the plurality of linear slots, and
• a gap is defined at least in part by the first mold structure and the second mold structure, the gap corresponding to a shape of the polymer film,
• receiving the photocurable material in the gap, and
• directing radiation at the one or more wavelengths into the gap to harden the photocurable material into the polymer film.