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08-12-2023, 01:33 PM
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Made this a sticky.
Some more background. This first link is for stainless steel: https://bssa.org.uk/bssa_articles/he...heated-in-air/ These articles discusse "tempering" steel in general: https://knifemaking.com/pages/forgin...at-color-chart https://sheffieldgaugeplate.co.uk/bl...-colour-chart/ https://en.wikipedia.org/wiki/Tempering_(metallurgy) And another article on tempering steel, in this case a lunch box: https://www.instructables.com/Home-O...eringColoring/
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