Precision Surfacing of Wood

This paper deals only with what is sometimes called “cabinet surfacing”. The machines employed average 30 to 36 inches in width, with a bed drop of 6 to 8 inches on inclined ways. The cutterheads average 5 inches, not more than 6 inches in diameter, and carry four to six high-speed steel knives. A cutting angle of 25? will successfully surface 95 percent of all types and kinds of hard and soft woods, narrow pieces, or glued-up panels. The knife projection from the bar lip should not exceed 3/32 inch, nor should it be much less than 1/16 inch. For precision planing the material should have a moisture content of 6 percent. The planing room should be held as closely as possible to a constant temperature of about 70?F. Material, particularly glued panels, should be first rough surfaced since the final precision cut is only about 1/32 inch.

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