Mask　projection　stereolithography　can　be　used　to　fabricate　complex　ceramic　parts　layer　by　layer　through　the　photopolymerisation　of　ceramic　suspensions.　The　broadening　or　lateral　overcure　of　the　curing　shape　occurs　because　of　light　scattering　effects.　Achieving　a　better　dimension　and　strength　quality　by　adjusting　light　energy　delivery　in　the　boundary　mask　area　has　been　insufficiently　investigated　thus　far.　In　this　study,　the　conventional　mask　was　segmented　into　boundary　and　interior　masks.　The　exposure　time　and　power　of　the　boundary　mask　(two　pixels　wide)　were　varied　to　investigate　the　effects　of　segmented　exposure.　The　segmented　exposure　constrained　the　dimension　errors　to　a　width　of　within　two　pixels　for　a　feature　dimension　of　less　than　1200　µm.　It　further　smoothed　the　lateral　surface　of　the　green　part　to　achieve　Ra　values　of　below　6　µm.　Moreover,　enhancing　the　boundary　mask　increased　the　flexural　strength　and　Weibull　modulus　to　248　MPa　and　11.1,　respectively.　The　results　indicate　that　segmented　exposure　can　potentially　be　used　in　complex　lattice　ceramic　structures.　©　2018　Elsevier　Ltd　and　Techna　Group　S.r.l.