On Sunday, October 7, 2018 at 1:36:19 PM UTC-7, wrote:
John Larkin wrote
I scrape magnet wire with an x-acto knife. That leaves a shiny surface
that wets nicely. I think the professional wire strippers use rotating
knives.

I just select 375 °C as soldering temperature,
that burns the magnet wire insulation,
and then you can just tin it.
Scraping damages the wire.
But watch out for the terrible possible toxic smell.
I use a match to burn off the insulation. Sand paper also works without nicking the wire. I think I saw some kind of chemical stripper in the electronics catalogs, but I never tried those.