This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Desiring to do some fancy graining and having no tools at hand, I hastily made two of them from pieces of ear- den hose, as shown in the sketch. Two pieces were cut from the hose, each 5 in. long, and the first one made as follows : A small hole, about 1/4 in, in diameter, was cut through the outside layer of rubber with a sharp knife at two points on opposite sides of the hose and exactly in the center for length. Around these holes rings of the rubber were cut out, or rather peeled off from the canvas part, the rings being 3/16in. wide, and the grooves, or parts removed, also 3/16in. wide. The hose will then appear as shown in the upper left-hand corner of the sketch.
Ill: Tools Cut from Pieces of Garden Hose for Making Grains of Wood in Painted Surfaces
To use this grainer, first paint the ground color, using a buff tint for imitation light oak, and allow it to dry, then put on a light coat of raw sienna, and while wet, take the prepared hose and draw it slowly over the length of wood, at the same time revolving the grainer slowly.
The other piece of hose, at the other corner, is made to take the place of a steel graining comb. The rubber is cut away lengthwise, leaving four segments, about 4 in. wide, on four sides of the hose. These segments are then notched out, like threads on a tap, each segment having a different number to the inch. These are used in the same manner as steel combs. - Contributed by A. H. Waychoff, Koenig, Colo.