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Thread: Making a Flat Spring
12-12-2003, 11:06 PM #1
Actually I'm looking for a way to temper a small flat spring for an 80 year old airgun
12-13-2003, 01:57 AM #2
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 ?
12-13-2003, 03:13 AM #3
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.
12-13-2003, 03:55 AM #4
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"
12-13-2003, 07:46 AM #5