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 109
endency in filing flat surfaces isalways to remove the edges, leaving a convex surface. Byfiling across the material at an angle of about 45 degrees,moving the file forward and sideways in one motion, occa-sionally reversing the direction from forward and left toforward and right, this fault is to… … Fig. 34. to slip rather than cut the material. When work has been trued up,^ it should be finished by di^aw-filing. For thisoperation hold the file as in Fig. 34, with both thumbs on theedge nearest the body, and the fingers of both hands on theother edge; then carefully push and draw the file over…
Metal-work
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