If split screwdriver handle, new best done of vinyl plastic or plexiglass. Drill a hole in the plastic, whose diameter is half a millimeter smaller than that of the rod. Then secure the rod in the electric drill Chuck or the drill press and turned on the engine, press in the hole. After the first speed friction will melt a thin layer of plastic, and the handle is easy naladitsya on the web. When the polymer hardens, the connection of these dissimilar materials will be very durable.