Figs. 169-171.
It is advisable to filter the water used from the barrel, that you may be sure it is free from dirt, so an arrangement similar to that shown in [Fig. 171] should be fastened below the work-table. It consists of a glass funnel set in a hole bored in a block of wood (see A in [Fig. 171]), which is suspended from the bottom of the work-table by means of a stick (B), one end of which is nailed to block A and the other end to the work-table. Keep a piece of filter-paper in the funnel. The rubber tubing should be cut just long enough to reach the funnel, and the bottom of this filter should come within an inch or two of the sink, which will be set in the shelf below.
You will find an iron drip-pan about as cheap
A Sink as can be had, considering that one twelve by seventeen inches will cost you just fifty cents—twenty-five cents for the pan and an equal amount to pay a tinsmith for soldering a three-eighths inch pipe in a hole cut in the bottom for a drain. Either fasten the sink on the shelf, boring a hole for the pipe to fit in, or set it in an opening cut in the shelf, as shown in the drawing, supporting it by the rim around its top. Slip a piece of rubber tubing over the lower end of the drain pipe and to this attach the second pinch-stop as a regulator for emptying the sink (see [Fig. 169]).
As the water supply would be insufficient to wash the plates thoroughly after taking them from the hypo bath, it should be used for rinsing only, and
A Washing-box, after the scheme of [Fig. 172], made to hold the negatives while washing them. This box will stand on the shelf beside the sink until you are through developing. The rack is made up of strips of wood fastened together with wire brads. [Figure 173] clearly shows its construction. Strips A, B, C, and D should be placed three and three-quarters inches apart for four-by-five plates, and kerfs should be cut in their edges as shown. A and D are mounted upon short stilts, and B and C are nailed to the uprights supporting the handle. The plates rest upon strips nailed across the bottom pieces.
Fig. 173.—A Washing-rack.