A removable, reusable one-piece device for masking a door hinge to prevent paint from getting on the hinge while the door andor door frame are being painted. A transport mechanism receives the documents from the input receptacle and transports the documents past a full image scanner and a discrimination unit. An insert is applied to the sole and the precise fit of the sole and insert checked on the foot. It is therefore possible to reduce the surface roughness and accomplish an electrically uniform characteristic over the entire area. The invention provides a simple and easily-controlled process of preparing porous inorganic bone substitute materials. The first multicast distribution tree, but not the second multicast distribution tree, is selected for the frame.