Greater Utilization of Material Obtained from New Machine

In lumber manufacture, sawdust may comprise up to 50 percent of the original material. G. D. Schneider has developed a machine which slices wood without fines into material suitable for rough products. When such products are planed, no more loss occurs when compared to gang-ripped blanks. This machine slices wood in a series of round knives mounted on mandrels and spaced by discs which are as wide as the desired lumber thickness. Cleavage ahead of the knives is prevented by a set of pressure plates. In this machine, the density of the wood regulates the cut. The horsepower requirement is 0.48 horsepower per cut. Material tested on this machine ranged from kiln-dried hard maple to kiln-dried-basswood. A 1/4-inch cut per knife produced material for finish surfacing. More work in this area (depth of cut per knife) is needed to determine the optimum depth of cut for various species.

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