Yup, truer words were never spoken: "confusing to you"
You say heat the oven to 1475 then put the blade in for 8 to 10 minutes. I know this may sound stupid, but I have to ask. Again, I'm a literal person, so forgive what may be a stupid question. By this, do you mean: heat the over to 1475, put the blade in and let the over heat back to 1475 and THEN time 8 to 10 minutes?
I only ask because the oven drops a good 30 degrees F when I open the door to grab a blade for quenching. I suppose I should just do it and see, but I don't have a hardness tester and I'll have to go somewhere to someone that does, and I would prefer that to not be a wasted effort.
Thanks!
-Dan