. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 319.—Exercise No. 19. Operation.—Lay off center punch mark 1 from oneend. Heat and draw first to the form shown by B, thento that shown by C. Set over the end, C, and finish asshown by D. 422 SHEET METAL WORKERS MANUAL Cut the corners, punch the hole, as in E and draw the<eye on the horn to the form shown by E. Heat at 0, in illustration F, cool the eye and bend asrsliown by Q. Complete t
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 319.—Exercise No. 19. Operation.—Lay off center punch mark 1 from oneend. Heat and draw first to the form shown by B, thento that shown by C. Set over the end, C, and finish asshown by D. 422 SHEET METAL WORKERS MANUAL Cut the corners, punch the hole, as in E and draw the<eye on the horn to the form shown by E. Heat at 0, in illustration F, cool the eye and bend asrsliown by Q. Complete the bending as indicated by thedotted lines in G. EXERCISE NO. 20. B £ ROUND ICOffNFR SquareCorner ■
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Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
