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.