Gradient coil assemblies for horizontal magnetic resonance imaging systems and methods of their manufacture. An exemplary apparatus includes at least one cutter for trimming a first and a second edge of a sheet material in a first and a second direction, and a drive system for moving the sheet material in two perpendicular directions for trimming the first and second edges with the at least one cutter. The electrode passes through an opening in a wall of the tank so as to be immersed in the conductively heatable melt. Also included are a first primary game presented on a first primary game display and a second primary game presented on a second primary game display. The methods can include forming an etch stop layer on an electrode, forming a molding layer on the etch stop layer, forming a recess region including a lower part having a first width and an upper part having a second width by recessing the etch stop layer and the molding layer, and forming a layer of variable resistance material in the recess region.