Full Metal pole plates of the type SMS 50 and SMS 70 can be built on QX and Mill-Tec magnetic chucks. The pole plates are made with a special shrinking-method and therefore are extremely stiff. When milling under extreme conditions, SMS pole plates protect the magnetic clamping system. For devices for serial production slots, stops, strokes, and the like can be introduced into the magnetically active, mechanically workable surface. For automated applications compressed air-outlets can be incorporated in the pole plate for cleaning the pole plates as well as for the safe releasing of the workpieces. The size of the pole plates is custom-defined, depending on requirements and application. Heights between 22mm and 62mm can be realized. The use of magnetic clamping plate pole + SMS has proven itself to weld 3D sheet metal parts well.