A method of forming a sheet metal casket comprises providing a sheet metal casket shell having at least a portion of an end wall and at least a portion of a side wall and a round corner between the portion of the end wall and the portion of the side wall, and forming a generally planar corner oriented at about a 45\xb0 angle relative to the portion of the end wall and the portion of the side wall. Adapter memory stores each packet. Driver stage output pad signal level is maintained at a desired state level by the auxiliary output driver whenever the power supply slips below its design tolerance range. This is then followed by a sputter etching step which removes any overhang of this seed layer at the mouth of the trench or hole.