GUNSMITHING AND TOOL MAKING BIBLE
TEMPERING THE REAMERS Turn off the furnace, close it up, and let it cool down to 350 degrees. We will then put the hardened ream ...
Do not take over .003 per side, as it will heat the metal too much. Go slow and easy. The pilot on the finish reamer will be gro ...
This will darken the metal so you can see how close you are getting to the cutting edge. Grind the relief just back of the cutti ...
MAKING THE CHAMBERING REAMER The chambering reamer is no different in grinding than the barrel reamer, except there are more ang ...
When cutting the flutes on the body of the reamer, be careful that you do not go under .062, as this will weaken the reamer. Whe ...
When you first start grinding, grind the pilot first. You want to decide if you want to have a throat on the reamer or not. If y ...
neck can be ground slightly shorter than shown. The reason for this is that when you grind the shoulder, the neck then can be se ...
RIFLING CUTTER In rifling barrels, a rifling head to hold the cutter is used. This is attached the rod or tube which draws the c ...
This seats against a steel plunger within the tube that has a coil-spring in front of it. The front end of the cutter is beveled ...
end that extends slightly beyond the thick end of the cutter body. This is toward the end of the rifling head to which the pull- ...
...
HEAT TREATING TOOL STEEL We will now cover as much as possible the heat-treatment of the tools and cutters that you will be maki ...
OIL HARDENING TOOL STEEL, Carbon 0.85, Manganese 1.18, Silicon 0.26, Chromium 0.50, and Tungsten 0.44 per cent. HIGH CARBON HIGH ...
GRAIN SIZE AND TOUGHNESS Two other factors are involved in the heating of tool steels, besides the formation of austenite and th ...
1400 to 1475 degrees F. Annealing, 1375 to 1425 degrees F. TEMPERING TEMPERATURE As Quenched 300 deg 400 deg 500 deg 600 deg 700 ...
OIL I normally use 5-weight oil for all my quenching, but any mineral oil 5 weight or less will work fine. The temperature of th ...
490 degrees, Yellow brown, extra hard, taps, dies. 500 degrees, Brown yellow, thread dies for general work. 510 degrees, Spotted ...
2372 degrees, Yellow white. 2552 degrees, White welding heat. 2732 degrees, Brilliant white. 2912 degrees, Dazzling white, bluis ...
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MAKING AN ELECTRIC HEAT-TREAT OVEN The tools required for making an electric oven are usually found in your shop or garage. At a ...
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