Abstract: A 3D additive manufacturing machine and an additive manufacturing method for manufacturing objects layer by layer, to obviate a need for a rotating prism. The machine can fill spaces in any one layer between paths generated by neighboring illumination spots from an array by sweeping subsequent paths between previously manufactured paths or by meandering along the paths. As a consequence, sufficient intensity may be provided for 3D additive manufacturing, even when using LEDs as a light sources.

Abstract: The present disclosure relates to computer implemented method of supporting on support elements during 3D printing on a print platform of a 3D print object to be 3D printed based on a 3D print model, comprising: obtaining the 3D model by the computer; and displaying a visual representation of the 3D model on a display connected to the computer, CHARACTERISED BY displaying the visual representation of the model with individually user-selectable faces; receiving, by the computer, input from the user on a selected one of the faces, for support by a minimum number of added support elements to minimize scarring of the object. Based on this input, the computer implemented method proceeds to automatically orient the model, place supports, and 3D print the object from the model. The user is relieved from tedious or cumbersome manipulations of the model before printing.

Abstract: A 3D printer and a method implemented therein for limiting inherent material accretion which may result during the 3D printing and which results in deformations relative to a desired form for printing. Two mechanisms are disclosed for this purpose. For example, on the basis of a provided model one mechanism includes compensating the model for inherent accretion and generating layers for printing for the 3D printer on the basis of the compensated model. Another mechanism includes generating layers for printing for the 3D printer on the basis of the model and compensating the layers for printing for inherent accretion.

Abstract: A 3D printer and a method implemented therein for limiting inherent material accretion which may result during the 3D printing and which results in deformations relative to a desired form for printing. Two mechanisms are disclosed for this purpose. For example, on the basis of a provided model one mechanism includes compensating the model for inherent accretion and generating layers for printing for the 3D printer on the basis of the compensated model. Another mechanism includes generating layers for printing for the 3D printer on the basis of the model and compensating the layers for printing for inherent accretion.