The electrical forge proper is mounted on an adjustable electrode holder system directly in front of the microscope objectives and to the left of the microtool being fabricated. The vertical and horizontal position of the heating element can be precisely controlled by the two knobs mounted on the operating head and main electrode casting. The two knobs on the stage control the vertical and horizontal movement of the microtool. The electrode holder can be positioned either vertically or horizontally and can easily be replaced. Two curved air jets are also mounted on the adjustable holder system and are equipped with an adjustable valve.
Filament heat is controlled by adjusting the current to the electrode.
The heat at a given setting will vary depending on the size and type of filament wire, the amount of air blown against the filament, and the amount of heat conducted away from the filament by the tool. A circular disk, or mechanical stage, is mounted in front of the lamp housing. Both disk and spindle may be rotated about their own axes and the entire assembly may be adjusted vertically or horizontally by precision screws with knurled knobs. The light intensity directed to the microscope objectives may also be adjusted. The entire optical-electrical forge assembly is securely bolted to the cast aluminum main housing.