This section is from the book "The Boy Mechanic Vol. 1", by Popular Mechanics Co.. Also available from Amazon: 700 Things for Boys to Do.
Strips of soft iron, 1/4 or 3/16 in. in width and 1/32 in. thick, are used in making the pipe rack shown in Fig. 1. This material can be obtained from any local hardware dealer who carries bar iron in stock.
Draw a full-size sketch of the design on paper, then run a string over each part, which, when straightened out, will give the length. The scrolls are bent with a pair of round-nose pliers. These, with a pair of flat-nose pliers, are all the tools necessary. The part for holding the pipes is shown in Fig. 2. The end elevation, at E and F, shows how the rack is fastened to the main frame of the rack. --Contributed by J. W. Vener, Boston, Mass.
Design of a Rack
 
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