dfanonymous
Well-Known Member
- Joined
- Jul 16, 2016
- Messages
- 2,284
I go by the dull red glow in the dark room as well prior to tuning.Discoloration isn't a great indicator on its own.
I found the 750 was still too low to have an impact, instead I go by the dull red glow in a dark room (and tune from there based on results) and use the 450 to ensure the heat hasn't spread where it shouldn't.