Hello,
I do this on a daily basis. I can actually fix spring hinges with original flexible function in most cases. You can look couple of my videos on YouTube.
https://youtu.be/1P-g4S_BK70
https://youtu.be/Dvum4N82WyU
But to do that you would need to invest quite a lot as you need laser welder for that purpose.
In case some of you would badly need such repair, you can contact me and I could fix, but you would need to send glasses to Lithuania.
Regards,
Ed
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