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  1. daveg48

    Molded threads

    I have an old brass steam whistle with the top (locking) acorn nut missing. This thing must have been special built by someone with screw cutting lathe. As near as I can determine the threads are 7/16 x 18. I can not find any currently made nuts and or taps with these threads. Is there a...
  2. daveg48

    crystalization result of impact with metal hammer???

    OK you guys, you have helped me a bunch. I do not know the exact comp of the metal but speculate it is at least 4140 and possibly ore carbon than that. From what I gather the handle should have been tempered. The handle was split in a fork to spread the force over the die, and it was one side...
  3. daveg48

    crystalization result of impact with metal hammer???

    Thanks for your answer. I understand the tempering of the handle. Will it eventually "work harden" due to hitting it with a metal hammer? Will it affect the entire length(4") of the handle?
  4. daveg48

    crystalization result of impact with metal hammer???

    I am aware of the saftey issues of hitting metal to metal I use a die to cut leather that was made as a punch(with a handle) rather that to be used in a press. After minimal use it crystalized and broke. Now I am told never to strike this type of tool with a metal hammer. I have chisels and...
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