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    Legacy Member Salt Flat's Avatar
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    Making springs

    I have been experimenting with spring making for awhile. (mostly flat springs) Just thought I'd pass a few things along. The trickiest part for me was always getting the right temper after hardening. I broke a number of springs along the way by not getting them to the right temp which leaves them brittle. Getting the hardening and tempering colors/temperatures just right is the most important thing. Study a color/temperature chart and remember the order of color change. Heat very slowly moving the torch around. For large springs an Oxy acetylene torch works great. Don't get too close. Hopefully you will have an existing spring to copy. Make a sketch of the spring with all dimensions and try to make the new spring exact to it as you can. Filing in the details will take some time. The picture below is a mainspring that I just finished for an 1894 Marlin. I have been using an old 1/8th inch thick circular saw blade for spring stock. I cut 1/2 wide strips using an abrasive saw blade or cutting torch.

    Good Article on Spring making link:
    https://www.brownells.com/aspx/learn...aspx?lid=12601

    Also note that Wisner's Gun Parts makes many high quality springs and parts. A+ for them.

    Salt Flat
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    A Collector's View - The SMLE Short Magazine Lee Enfield 1903-1989. It is 300 8.5x11 inch pages with 1,000+ photo’s, most in color, and each book is serial-numbered.  Covering the SMLE from 1903 to the end of production in India in 1989 it looks at how each model differs and manufacturer differences from a collecting point of view along with the major accessories that could be attached to the rifle. For the record this is not a moneymaker, I hope just to break even, eventually, at $80/book plus shipping.  In the USA shipping is $5.00 for media mail.  I will accept PayPal, Zelle, MO and good old checks (and cash if you want to stop by for a tour!).  CLICK BANNER to send me a PM for International pricing and shipping. Manufacturer of various vintage rifle scopes for the 1903 such as our M73G4 (reproduction of the Weaver 330C) and Malcolm 8X Gen II (Unertl reproduction). Several of our scopes are used in the CMP Vintage Sniper competition on top of 1903 rifles. Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Specializing in premium ammunition and reloading components. Your source for the finest in High Power Competition Gear. Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses.
     

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    Legacy Member bombdoc's Avatar
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    The old UKicon gunsmith's technique for tempering springs was "burning off".. Having hardened the spring in tempering oil, the spring was then heated up again to the point where the oil coating the spring would remain burning. The burning spring was then left to burn out, and then tested.

    Traditionally sperm oil was used to temper springs, however cooking oil seems to do the same job.. and leaves the workshop smelling like a greasy spoon cafe!

    That said, I tend to rely more on one of those IR thermometers these days

    By the way.. I find one of these really useful for making coil springs...

    Hemingway Kits Universal Spring Winder
    Last edited by bombdoc; 05-16-2020 at 01:35 PM.

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