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Blanking and Piercing

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Cinémathèque québécoise, Montreal, Quebec: 16mm.
"Defines piercing, an operation fundamentally the same as blanking, as cutting shapes out of metal."


“Blanking and Piercing,” Alcan 16mm Film Catalogue (Montreal: Aluminum Company of Canada, Limited: c.1960), 3.
“Describes the techniques and employed in cutting blanks and piercing holes in aluminum sheet. The picture explains how to lay out sheet economically; how to design tools with proper clearance; the precautions required in setting up tools for best results; and why thorough lubrication and careful maintenance is important. The use of shears, saws and routers is also discussed, as in the Guerin ‘rubber pad’ method."