Don Mills, Ont. : Southam-MacLean Publications · leaf 191
n-vented, which proved a distinct advance over the solid tooth. The principal changes since have been in the quality ofthe steel and workmanship. The saw must cut continu-ously and at high speed. Heating and stretching must be * Published by courtesy of The Sinionds Canada Saw Company,Limited,… … Fig. 3. steel mill, thoroughly modern, driven by power from NiagaraFalls. Only the highest quality crucible steel is made. Intothe crucible goes the finest Swedish iron, the proper per
Furniture industry and trade · Woodworking industries
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