ilmmakers can save from one-third to one-half on the cost of film if they buy it in bulk and do their own processing. In using the outfit described here, the exposed film is wound on a reel mounted on a hinged frame above a round-bottom sheet-metal tank. The reel can be raised while pouring the solutions into the tank, after which it is lowered and revolved to bring all the film in contact with the solutions. Water for washing the film between and after the baths in the solutions, comes from two copper tubes, one at each side of the tank. Holes are drilled along their length.
The entire processing outfit takes little floor space. The table has a 34 by 36-in. top, which is cut out to take the tank. A convenient height for the table is 36 in., but this can be altered to suit the individual. The tank, Fig. 2, is made of three pieces of galvanized sheet metal, soldered together. The drain is fitted with a valve and can be swung around over a wide-mouth bottle to recover solutions that may be used again.

The reel, Fig. 1, is made by mounting two 16-in. wood disks on

an iron-rod axle. Fourteen 1/2 in. dowels, spaced equidistantly, are mounted between the disks about 3/4 in. from their edges, but only seven of the dowels are mounted solidly. The other seven are set in slots and the ends are forced toward the outer extremities of the slots by heavy rubber bands. By tying down the ends of the movable dowels before winding the film on the reel and cutting the strings after it is in place, the film will be kept taut while it is being processed.

The film guide pegs are 1/8-in. dowel pins spaced to accommodate 16-mm film. The pegs are mounted only in the seven stationary dowels and as the film is wound in a spiral, it is necessary to make allowance for this in the location of the pins on each dowel. The clip by which each end of the film is fastened to the reel is detailed in Fig. 4. The frame holding the reel is 3/4-in. wood and is hinged to the table. A drawer pull on the front is convenient for moving it up and down.