The simplest method of making “shoes” for the trace of the car based on the manufacture of the hubs of the elements of the dry type batteries А343 “prima” and the like.
From the edge of the “minus” side of the battery need to retreat to 6 mm (Fig. 1) and needle files on the markup to saw through a circular slit (by the way, here is the boundary between the graphite “face” of a galvanic cell and plastic liner-insulator). Then, the resulting “disk” with the core separated from the battery and washed.