I think solder is not wear-resistant. I wonder how long switches will last and what would be a failure mode (like, can solder dust cause a short-circuit?).
I had a go at trying to sort these out ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8_Qgr17ZWR0.htmlsi=4o2shddDf9oW21x- in the end I made my own, much smaller for the bench ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-CCaxj9IDMkM.htmlsi=H09y-__PpHoiDBEt
I have not figured out a way to measure this yet. I have been told from another reply that I am Paul Foot the comedian. After watching some of his material I think I might be him.