Re: Thanks Hugh - ummm (more)....
OK, for you amateurs: Fire blue is attained somewhere around 550-575 degs, depending on the amount of carbon in the steel. Place the part in your oven and start out at 500, let it soak for 15-30 mins and check the color, then keep increasing the temp by 5 deg until you reach the desired color, waiting 15 mins between each increase in temp.
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