A progressive stamping die assembly apparatus and method in which strip stock material advances in a first direction through the apparatus and substantially simultaneously with the strip stock movement, a transversely moveable die station moves in opposite second and third directions substantially perpendicular to the first direction to one of a plurality of predetermined positions. The heat treatment condition is determined based on a measurement value of the line width measured in the first line width measurement step. This results in a partially cleaned stream. In these systems, a controller-transmitter is activated at a remote tissue location to transmitdeliver acoustic energy through the body to a receiver-stimulator at a target tissue location. The heat sink is arranged on the backplane in a manner of being movable in a light incidence direction.