. The 20th century toolsmith and steel worker; a complete, practical, and scientific book, written by a thorough expert mechanic and steelworker, especially in the interests of blacksmiths, toolsmiths, toolmakers, and all mechanics connected directly on indirectly with the use, repair, and manufacture of steel into tools . Grain open, but not so coarse orfiery. Grain not coarse, but with somefiery lustre. Fine grain clear through; no fierylustre. Grain fine on the outside, butnot in the middle. Grain same as the bar GUIDE FOE TEMPERING - - CHAET B. High steel, after hardening, may be tempered
. The 20th century toolsmith and steel worker; a complete, practical, and scientific book, written by a thorough expert mechanic and steelworker, especially in the interests of blacksmiths, toolsmiths, toolmakers, and all mechanics connected directly on indirectly with the use, repair, and manufacture of steel into tools . Grain open, but not so coarse orfiery. Grain not coarse, but with somefiery lustre. Fine grain clear through; no fierylustre. Grain fine on the outside, butnot in the middle. Grain same as the bar GUIDE FOE TEMPERING - - CHAET B. High steel, after hardening, may be tempered as desired by slowly heating it in the open Are until thecorresponding color appears. If heated in oil or tallow, these colors do not appear, but indicationsof the right heat are as given below. Designationof Temper. Very Yellowish White or Straw. Temp. F. Condition of Oil or Tallow. ABOUT First begins to smoke. Orange or More abundant dark smoke Thick black volume ofappears. Oil will flash if flame is continue to burn. To Draw Temper. If it is a flat piece, knife blade or bit, heat a heavy iron; lay tool on edge up; draw to darkstraw color. If it is a heavy round piece, make a heavy ring of iron, hold tool in center, draw to dark straw color. After tools are forged never grind or file them until tempered. As carbon is on the outside, the moreyou grind off. „ „ . ^ . ^., For Drawing Temper m Oil. Better use tallow. Put tallow in pot on slow fire; put tools in tallow, and watch color of smoke,as chart indicates. The color on Chart B and color of smoke gives you the temper you desire. For all springs do not harden, but boil in tallow until the smoke indicates blue color, then take outand plunge in cold linseed oil. TOOLSMITH AND STEELWORKER 225 Working Steel at Night. Considering that the author has done a great deal oftoolmaking at night, the tools have never been of sucha good quality
Size: 1482px × 1685px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherc, booksubjectsteel
