A method of forming a three-dimensional article, said method comprising the steps of: I) printing a first photocurable silicone composition with a 3D printer to form a layer; II) irradiating the layer with an energy source to form an at least partially cured layer; III) printing a second photocurable silicone composition on the at least partially cured layer with the 3D printer to form a subsequent layer; and IV) irradiating the subsequent layer with the energy source to form an at least partially cured subsequent layer; and V) optionally, repeating steps III) and IV) with independently selected photocurable silicone compositions for any additional layer(s) to form the 3D article; wherein the first and second photocurable silicone compositions are the same as or different from one another; and wherein the photocurable silicone composition(s) is(are) free of acrylate or epoxy functionality; and wherein the photocurable silicone composition comprises: A) (i) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups per molecule, wherein ethylenically unsaturated moieties of the silicon-bonded ethylenically unsaturated groups are separated by at least four atoms; or A) (ii) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups and at least one silicon-bonded phenyl group per molecule, wherein a silicon atom bearing an ethylenically unsaturated group and a silicon atom bearing a phenyl group are separated by only an oxygen atom; B) an organosilicon compound having an average of at least two silicon-bonded hydrogen atoms per molecule in an amount sufficient to cure the photocurable silicone composition; and C) a catalytic amount of a photoactivated hydrosilylation catalyst; and D) optionally, a filler. I) printing a first photocurable silicone composition with a 3D printer to form a layer; II) irradiating the layer with an energy source to form an at least partially cured layer; III) printing a second photocurable silicone composition on the at least partially cured layer with the 3D printer to form a subsequent layer; and IV) irradiating the subsequent layer with the energy source to form an at least partially cured subsequent layer; and V) optionally, repeating steps III) and IV) with independently selected photocurable silicone compositions for any additional layer(s) to form the 3D article; wherein the first and second photocurable silicone compositions are the same as or different from one another; and wherein the photocurable silicone composition(s) is(are) free of acrylate or epoxy functionality; and wherein the photocurable silicone composition comprises: A) (i) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups per molecule, wherein ethylenically unsaturated moieties of the silicon-bonded ethylenically unsaturated groups are separated by at least four atoms; or A) (ii) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups and at least one silicon-bonded phenyl group per molecule, wherein a silicon atom bearing an ethylenically unsaturated group and a silicon atom bearing a phenyl group are separated by only an oxygen atom; B) an organosilicon compound having an average of at least two silicon-bonded hydrogen atoms per molecule in an amount sufficient to cure the photocurable silicone composition; and C) a catalytic amount of a photoactivated hydrosilylation catalyst; and D) optionally, a filler. A) (i) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups per molecule, wherein ethylenically unsaturated moieties of the silicon-bonded ethylenically unsaturated groups are separated by at least four atoms; or A) (ii) an organosilicon compound having an average of at least two silicon-bonded ethylenically unsaturated groups and at least one silicon-bonded phenyl group per molecule, wherein a silicon atom bearing an ethylenically unsaturated group and a silicon atom bearing a phenyl group are separated by only an oxygen atom; B) an organosilicon compound having an average of at least two silicon-bonded hydrogen atoms per molecule in an amount sufficient to cure the photocurable silicone composition; and C) a catalytic amount of a photoactivated hydrosilylation catalyst; and D) optionally, a filler.