You
are the man where clocks are concerned, Mike, so as far as I'm concerned, you are right. And this is what all the clock books say too.
But the "Trifix" ones I bought not long ago from Cousins claimed to be ready to insert, no pre-cleaning required:
Quote:
Trifix mainsprings are supplied lubricated, no additional cleaning is required prior to use.
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https://www.cousinsuk.com/product/en...-french-german
This is handy for those without a winder or the skill to coax an unwound spring into a barrel. I appreciate that this might not be standard (or good) practice though.
Nick