Self-replication has been achieved by man within a complex and systematic method by self-replicators known as F-Units (for "Fabricating Units"). The system must be initialized and set up first as follows. Such is achieved by first using excimer lasers at ultraviolet wavelengths of usually about 193 nanometers that evoke a 1 micron "spot size" cutting path to carve out microscopic tiles that are electrically conductive and nonconductive. Aluminum and polycarbonate are usually used initially. After first providing the tiles to already existing F-Units they will fashion the tiles into vertical layers constructing another identical F-Unit within the "block" of tiles so fabricated. The F-Units independently move about the surface of the structure that they are fabricating much like a trolley ca