. Canadian forest industries July-December 1915. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. CANADA LUMBERMAN AND WOODWORKER October 1, 1915 Practical Knife-Making- By John W. Bailey, Berlin, Ont. Woodworking establishments possessed of a tool room or filing room for the purpose of caring for edge tools, moulding knives, etc., being very much in the minority, it falls to the lot of the majority of machine operators not only to do their own knife grinding, but also to make such new knives as are required from time to time for regular or special w
. Canadian forest industries July-December 1915. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. CANADA LUMBERMAN AND WOODWORKER October 1, 1915 Practical Knife-Making- By John W. Bailey, Berlin, Ont. Woodworking establishments possessed of a tool room or filing room for the purpose of caring for edge tools, moulding knives, etc., being very much in the minority, it falls to the lot of the majority of machine operators not only to do their own knife grinding, but also to make such new knives as are required from time to time for regular or special work. While possibly it is questionable economy for a concern to do their own knife making it often happens, how- ever, that time will not permit of obtaining their requirements from a knife making concern. When such is the case a practical know- ledge of knife making is a valuable asset to the machine operator. Without doubt the first step in the process of making a mould- ing knife is to determine the pattern. Several systems have been advocated to accomplish this by drafting, the majority of which have been too elaborate, requiring too much valuable time to work out and for all practical purposes are no better than the method used by the writer, which has the advantage of being much more economical so far as time is concerned. Without doubt the most important part of making a knife pattern is to determine the amount of knife projection necessary to cut the different members of the mould. The balance in any event is to sketch in the intervening parts freehand. The writer determines the required knife projection by a scale made in the following manner, which for convenience may be made in the form of a steeJ rule to hang on a key-ring: First, draw an outline the exact size of the cutter head used on the machine for which the knives are intended as at (a), Fig. 1 of the accompanying sketch, then lay out the projection of a straight knife past the lip of the cutter head as at (b)
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
