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  1. #1
    viking17 is offline Plastic
    Join Date
    Aug 2003
    Location
    Downers Grove, Illinois,USA
    Posts
    42

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    Actually I'm looking for a way to temper a small flat spring for an 80 year old airgun
    Thanks

  2. #2
    TheMetalDoctor is offline Titanium
    Join Date
    Oct 2001
    Location
    San Jose, Ca. USA "That light at the end of the tunnel just might be......"
    Posts
    2,244

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    If it is a flat spring, buy a piece of blued spring steel, already tempered and just cut to size. What thickness do you need ?

    TMD

  3. #3
    Michael Az is offline Senior Member
    Join Date
    Dec 2002
    Location
    Safford, Az., USA
    Posts
    1,311

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    If I remember right,To anneal a spring, take a tin can that is empty. Turn it over so the open end is down. With your hammer, beat a depression in the top of the can. Place spring in depression and fill with motor oil and light it. When the oil burns away, you should have a spring. Place spring in vise and compress it. Either you will have a spring or it will break.
    Michael

  4. #4
    doc
    doc is offline Hot Rolled
    Join Date
    Mar 2001
    Location
    alvaton,ky
    Posts
    959

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    u r looking to draw to a purple color for tempering a light spring up to a blue for a heavy spring maype 550 to 580 depending on time & material .....for a heavy spring u may need to burn it off twice...if u miss it on the far side , u can always reharden it , miss it on the near side , & u will remake it !......near 60 yrs ago ,i was taught to check for color in a somewhat dark corner of the shop ( no direct light ) when initially heating to a cooked carrot color for hardening ..& as stated, when u compress a folded mainspring for a double , like der alte buschenmeister hat gesagt ,,,"u hef a schpring ,or u aint"

  5. #5
    Doug is offline Diamond
    Join Date
    Dec 2002
    Location
    Pacific NW
    Posts
    4,198

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    For info on springs try this site.

    http://home.earthlink.net/~bazillion/intro.html

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