A liquid resin composition comprising: a first proportion of acryloyl morpholine monomers; a second proportion of a photoinitiator exhibiting photodissociation into reactive subspecies responsive to selective exposure to radiation within a spectrum, the reactive subspecies polymerizing the first proportion of acryloyl morpholine; a third proportion of a radiation blocker absorbing radiation within the spectrum to limit penetration depth of incident radiation within the spectrum in the liquid resin; a fourth proportion of a polymerization inhibitor limiting an average chain length of acryloyl morpholine polymer polymerized from the first proportion of acryloyl morpholine monomers; and a fifth proportion of a temperature-stabilizer increasing the heat-deflection temperature of acryloyl morpholine polymer polymerized from the first proportion of acryloyl morpholine monomers.