Making Carbon Steel Hairsprings for Watches, Clocks and Other Small Mechanism.
Added 2024-02-20 07:56:27 +0000 UTCHey folks, this one is guaranteed to put a spring in your step, please enjoy!
Cheers,
Chris.
Direct links to the video -
Vimeo: https://vimeo.com/914680696/cbce3c183e
YouTube: https://youtu.be/in6yWrlighI
-------------- Video Notes: ---------------
The Selective Luddite – Hand Making a Verge Watch Hairspring. Pt.3: https://www.youtube.com/watch?v=98wI6IA4TH0
References/Further Reading:
Watchmaking, Daniels. https://amzn.to/48qn550
Precision Time Measures, Higginbotham https://archive.org/details/gri_33125001407648
Joseph Bulova School of Watch Making Training Manual, https://mybulova.com/vintage-bulova-catalogs
Treatise on Modern Horology, Saunier. https://archive.org/details/treatiseonmodern0000saun
Chicago School of Watchmaking Manual, Sweazey https://watchlords.com/viewtopic.php?t=4725
Springing & Adjusting Watches, Britten. https://archive.org/details/onspringinganda00britgoog
Watch & Clockmakers Handbook, Britten. https://archive.org/details/watchclockmaker01britgoog
Practical Watch Repairing, De Carle.
Practical Watch Adjusting, De Carle.
Antique Watch Restoration Volumes 1-3, Perkins.
Bench Practices for Watch & Clockmakers, Fried.
Watch Repairers Manual, Fried.
Watch Adjustment, Jendritzki.
Watch & Clock Making & Repairing, Gazely.
(Amazon Affiliate links to items used in this video)
Cameras:
Panasonic GH5 - https://amzn.to/2rEzhh2
Panasonic X920 - https://amzn.to/2wzxxdT
Books:
"Watchmaking" by Daniels: https://amzn.to/2V8ljSe
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"Drills, Taps and Dies", Tubal Cain: https://amzn.to/3wUFNA7
"Hardening, Tempering & Heat Treatment", Tubal Cain: http://amzn.to/2IdTQLw
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Optivisor Headband Magnifier: http://amzn.to/2HFg1FU
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Comments
You absolute magician.. amazing stuff!
Niek Lammers
2024-03-10 09:08:45 +0000 UTC...aaand it's now out of stock.... XD I shall have to keep it in mind for the future.
Duncan Luddite
2024-02-26 04:10:09 +0000 UTCSweet. Thank you.
Duncan Luddite
2024-02-26 04:08:31 +0000 UTCThank you mate! That material is a stainless foil for heat treating, I get it from here: https://www.artisansupplies.com.au/product/309-heat-treating-foil-tool-wrap-0-5-metre-sheet/ - Cheers :)
Clickspring
2024-02-26 02:22:06 +0000 UTCBeautiful work Chris, and a *really* interesting method of reducing the wire to dimension. Leaves the 1700's method in the dust :) Question: what is the metal envelope you're sealing the wire up in for tempering? It seems to cope with repeated folding and unfolding. Cheers
Duncan Luddite
2024-02-26 01:11:41 +0000 UTCGreat work Leonard, its a lot of fun getting the lathe to do things that are a little bit out of the ordinary :)
Clickspring
2024-02-21 21:19:45 +0000 UTCBeautiful video, Chris. I greatly enjoyed it. Your videos are a constant source of inspiration for me. I wound a set of compression springs once, for the keys and valves in a little pipe organ I was building. It's not to be compared with making hair springs, but it was an interesting job for me. I used spring-tempered music wire, and wound it around an appropriate sized mandrel mounted in my lathe. It took some trial and error to find the the right size for the mandrel, and the appropriate tension for feeding the wire, and then I was able to run a nice uniform set of springs. I made a handle to crank the lathe by hand, for greater control.
Leonard Solomon
2024-02-21 15:58:23 +0000 UTCChheers mate!
Clickspring
2024-02-20 18:52:41 +0000 UTCThank you mate, so pleased you enjoyed it :)
Clickspring
2024-02-20 18:52:07 +0000 UTCCheers Paul :)
Clickspring
2024-02-20 18:51:51 +0000 UTCEnjoyed reading that detail Andy, thank you :)
Clickspring
2024-02-20 18:51:38 +0000 UTCYes!
Clickspring
2024-02-20 18:51:10 +0000 UTCThank you mate!
Clickspring
2024-02-20 18:50:40 +0000 UTCDUDE - so amazing. When you got to the spherical, my mind got all twisted trying to figure out how you got threads on there! LOL You're one of my absolute favorite machining channels. Thank you a TON! (or a few grams. . . depending on the work! :) )
Micheal Malsed
2024-02-20 17:31:30 +0000 UTCOnce again Chris…..brilliant…brilliant work!!!
EVAN WINES
2024-02-20 14:00:48 +0000 UTCJust brilliant. As always.
Paul Busby
2024-02-20 12:01:25 +0000 UTCAs someone who spent a couple of years researching the rolling of spring steels I found it fascinating how different this process is from the commercial process using exactly the same material. (0.8% carbon steel) The hardness in spring strip and wire is created entirely by rolling or wire-drawing and no heat-treatment is done afterwards. What is important is the heat-treatment prior to the drawing / rolling process. This is called "patenting" (probably because it was once a patented process) and involves heating the material above the transition temperature and then quenching in molten salt to force it to transform to fine bainite. Molten sodium hydroxide at 420C works well. After that, with enough rolling or drawing reduction you can get the material up to 4GPa tensile strength with some remaining ductility. The microstructure at this point is very different to what you would find in a quenched-and-tempered spring, a fine drawn-out lammellar structure of bainite, rather than a homogenous martensite.
Andy Pugh
2024-02-20 09:12:14 +0000 UTCPrecision slinky
David
2024-02-20 08:29:54 +0000 UTCEveryday is a good day when clickspring posts content
Owen Morgan
2024-02-20 08:00:18 +0000 UTC
