Enhancing adhesion of objects to carriers during additive manufacturing

A method of making a three-dimensional object from a light polymerizable resin, comprising the steps of:

• (a) producing an object adhered to a carrier plate by light polymerization of said resin in a bottom-up stereolithography process;
• (i) said object comprising a carrier plate adhesion portion, a main body portion, and a circumferential boundary portion included in said carrier plate adhesion portion;
• (ii) said stereolithography process including overexposing said boundary portion, as compared to the exposure of said adhesion portion or main body portion, with light to enhance adhesion of said object to said carrier plate during the bottom-up stereolithography process;
• (b) optionally cleaning said object;
• and then
• (c) optionally baking said object to produce a further cured three-dimensional object, wherein said circumferential boundary portion either (i) extends into only a part of said main body portion or (ii) does not extend into said main body portion.