A magnetic recording head includes a return pole, a writing pole spaced a predetermined distance from the return pole, an induction writing coil forming a magnetic field on the writing pole, and a writing pole shield formed on the same plane as the writing pole. The two parts, together with two parallel guide members by which they are connected, are portions of a monolithic material block that are separated from each other by a material-free space in the form of a thin linear cut. The objective of the present invention is to provide a method of producing multi gauge strips by means of forming copper, a copper alloy, or a metal strip which can undergo plastic work in such a manner that its two sides in the widthwise direction are thinner than the center portion. Solids are moved towards a periphery of the tube where a cone collector facilitates to collect the solids. The tip may be attached directly to the container and the motion of the tip from the closed to the open position may be stopped directly by the container.