A method of making a polymeric heart valve , the method comprising: providing a valve body having a central axis and having a body fluid pathway extending along the central axis from an inflow end to an outflow end; positioning a flexible stent about an outer circumference of the body , the stent comprising at least three flexible stent posts each extending in the axial direction; attaching flexible material to each stent post of the at least three stent post to form a flexible tip on the respective stent post ; and forming at least three flexible leaflets extending from the stent , each of the leaflets having an attached edge defining an attachment curve along the stent extending between a respective pair of stent posts , and wherein pairs of leaflets define a respective commissure at each of the at least three sent posts , and wherein the at least three leaflets and the tip of each of the at least three stent posts are integrally formed at the same time by dip coating the stent ; wherein: the at least three leaflets define a partially open position at rest, a fully open position deflecting away from the central axis during forward blood flow along a direction from the inflow end to the outflow end, and a closed position deflecting toward the central axis during reverse blood flow along a direction from the outflow end to the inflow end, and in the closed position, each of the flexible stent posts flexes inward toward the central axis , wherein the step of attaching flexible material comprises adhering one or more strips of polymeric material to each of the stent posts . providing a valve body having a central axis and having a body fluid pathway extending along the central axis from an inflow end to an outflow end; positioning a flexible stent about an outer circumference of the body , the stent comprising at least three flexible stent posts each extending in the axial direction; attaching flexible material to each stent post of the at least three stent post to form a flexible tip on the respective stent post ; and forming at least three flexible leaflets extending from the stent , each of the leaflets having an attached edge defining an attachment curve along the stent extending between a respective pair of stent posts , and wherein pairs of leaflets define a respective commissure at each of the at least three sent posts , and wherein the at least three leaflets and the tip of each of the at least three stent posts are integrally formed at the same time by dip coating the stent ; wherein: the at least three leaflets define a partially open position at rest, a fully open position deflecting away from the central axis during forward blood flow along a direction from the inflow end to the outflow end, and a closed position deflecting toward the central axis during reverse blood flow along a direction from the outflow end to the inflow end, and in the closed position, each of the flexible stent posts flexes inward toward the central axis , wherein the step of attaching flexible material comprises adhering one or more strips of polymeric material to each of the stent posts . the at least three leaflets define a partially open position at rest, a fully open position deflecting away from the central axis during forward blood flow along a direction from the inflow end to the outflow end, and a closed position deflecting toward the central axis during reverse blood flow along a direction from the outflow end to the inflow end, and in the closed position, each of the flexible stent posts flexes inward toward the central axis , wherein the step of attaching flexible material comprises adhering one or more strips of polymeric material to each of the stent posts . <EOS>