Remember, from "Peanuts",Oddjob83 wrote:yea that was the weird part about my gas mixture confusion too, as, from the same teacher in a intro welding course had told me that spray arc was not usable unless you were using a premium gas and his example "Mison". but then when i was taking my ticket courses, he tells us that it is not necessary at all and say that i am wrong in suggesting so, and gave me a "are you daft" look. embarrassed me quite a bit as i got 99.9% in both classes and took notes meticulously. Perhaps he felt like taking me down a peg or something, i personally think he hasn't learned anything new in the last 15 years as far as welding goes.
"Those who can't "do", teach..."
Steve S