The practical metal-worker's assistant : containing the arts of working all metals and alloys, forging of iron and steel, hardening and tempering, melting and mixing, casting and founding, works in sheet metal, the processes dependent on the ductility of the metals, soldering, and the most improved processes, and tools employed by metal-workers, with the application of the art of electro-metallurgy to manufacturing processes : collected from original sources, and from the works of Holtzapffel, Bergeron, Leupold, Plumier, Napier, and others ... (1851)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 289
le will be found to fit in the most perfect manner, as it isan exact counterpart of the removed wood. 284 PUNCHES. The process is very economical and exact, but is only suited tolarge designs, because of the injury it would otherwise inflict on thewood, and on account of the expense of the tools,… … 316 Cut brads and nails, or those which, instead of being forged, arecut out of sheet iron by machinery, constitute the last example it isproposed to advance in this section, Brads of the most simple kind, as in Fig. 317, have no heads, butare simply wedge form, and are cut out of strips of sheet…
Metal-work · Electrometallurgy · Metallurgy
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