Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 280
Model 23. up the taper and point. Now file up bright the octagonalsides, clean off the top, and chamfer. The model is nowready for hardening and tempering, after which it should bebrightened all over with emery-cloth and oil. Model 2^—Flat Chisel: Cast-Steel.—Forge the end of aJ-inch octagonal bar… … Model 24. that the fiat part of the draw-down is an elongation of one ofthe octagonal sides of the bar; then anneal as in previous 264 METAL-WOKK exercises. Now cut off to length, file or grind the cuttingedges, and harden and tem^Der. Note.—Cast-steel always deteriorates on the outside whenheated,…
Metal-work
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