The article by Adam says 60C which is 140f and you then said :" Adam Karpowicz tried to bend a glued up Scythian bow and made sure, using an electric thermometer, that the surface temperature never exceeded 60⁰F. "
You then switch back to 60C but your general thought seems to be that 105 f is the danger point when Adam and others have showed you that the actual danger zone is probably 135-150f maybe even higher if no stress is induced on the glue at that temp.
What you quoted is clearly a typo and not a misunderstanding of farenheit and celsius scales.
150⁰f is higher than 60⁰c, which is 140⁰f.
All we can infer is that Adam never let the surface of his bow get above 140⁰f, and a joint still failed.
Furthermore, see the video I posted by JWB. He implores his customers to keep his bows at least 1.5 feet from. a hotplate on setting 4, which is low heat. This would imply temperatures of around 105⁰f, and for very routine de-twisting work that doesn't put a lot of stress on the bow.
You are a madman playing with fire if you think it's safe to expose glue to hotter temperatures than that. There's absolutely no credible sources saying thaf this is OK. The best thing to do is to assume temperatures of 105-110⁰f. Which are clearly all that is necessary for just about anything.
125-139⁰f temperatures upset glue bonds. We have evidence from Adam for that. If the joint failed the glue was softened, period.
