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By nickelsilver · Posted
Spot welding is the best, and is how Generale Ressorts does it. Rivetting is good, but it's an absolute bear getting the holes in the spring and tongue, centered in the spring, then making a rivet that fits well while being as low profile as possible and actually holding up to use. I would by far rather make a balance staff than rivet a tongue on a mainspring. There are a number of spot welders aimed at watchmaking on Aliexpress, I've been meaning to get one. They can do dial foot soldering (using a carbon rod) and spot welding. -
The Mastermatic I believe has auto reverse and is the one I will probably use once repaired. the other will be used as backup I guess.
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By Neverenoughwatches · Posted
I like gadgets but I'm tryin to keep that down , for the odd time that i have done this ....... Though i might be doing it more often, its a simple process that saves waiting time and cost of a new one. 🤔 maybe something like this that welds upto .15 nickel strips. -
By RichardHarris123 · Posted
For interest, I looked up spot welders. The cheap ones, used for battery packs, amongst other things, have decent reviews. Probably not very powerful but should be enough for a mainspring. -
By Neverenoughwatches · Posted
Doesn't affect any other part of the spring though ? I guess you would have had problems by now though if it did. I like the idea of riveting, it's about as close to spot welding as you can get without a spot welder 🤷♂️. Negates the heat treatment .
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