Pontiac wrote: “If you are doing metallurgy, how do you heat treat a billet of steel or measure the tensile strength of an aluminum rod?”
By watching a youtube video on their smart phone.
Now that’s funny. I don’t care who you are
It is prima fascia evidence of the ignorance behind the hands off cheerleaders
I suppose some people of a certain age think that watching a thing being done is the same as knowing how to do that thing.
I have watched glass being blown many times (in person and not on YouTube) but I don’t for a moment think that I could blow a wine glass.
Heat treating is not the art that glass blowing is but it is not far removed. It is very close when dealing with things knife and sword blades.