Skimbleshanks
Well-Known Member
Just for reference the human involuntary heat response is roughly 131°f. You will drop the brass when the case head gets that hot. Not enought to aneal the head.
Welders and weld inspectors use a number of temp sensitive markers. If you apply it before entering the heat source, your flame will melt the mark, because flame is generally hotter than the marker melting point. So welders and inspectors will check with ever highter temp markers until one doesnt melt. Weld for a bit and the 600° mark melts when applied but the 650° mark doesnt melt you know you are between those 2 temps. It does not work when applied prior to the heat being applied. Watching the color of the material change in the flame is a much faster and useful method when dealing with anealing cases.
My janky method uses a propane torch a speed bar and an old spark plug socket. Place the case in the socket and spin the wrench with the neck/shoulder junction of the case in the hottest part of the flame until the dullest red appears and the blue moves down to just past the shoulder body junction. Then dump the case a water filled sink. Oh I do this in a dark bathroom to see the color change. I dunk the socket in the sink periodically and never let it get too hot to touch.
Oh and we aren't burning any "minerals" out of the brass by over heating it. Nothing is removed from the alloy by over heating it while annealing in a flame. This myth needs to die.
Welders and weld inspectors use a number of temp sensitive markers. If you apply it before entering the heat source, your flame will melt the mark, because flame is generally hotter than the marker melting point. So welders and inspectors will check with ever highter temp markers until one doesnt melt. Weld for a bit and the 600° mark melts when applied but the 650° mark doesnt melt you know you are between those 2 temps. It does not work when applied prior to the heat being applied. Watching the color of the material change in the flame is a much faster and useful method when dealing with anealing cases.
My janky method uses a propane torch a speed bar and an old spark plug socket. Place the case in the socket and spin the wrench with the neck/shoulder junction of the case in the hottest part of the flame until the dullest red appears and the blue moves down to just past the shoulder body junction. Then dump the case a water filled sink. Oh I do this in a dark bathroom to see the color change. I dunk the socket in the sink periodically and never let it get too hot to touch.
Oh and we aren't burning any "minerals" out of the brass by over heating it. Nothing is removed from the alloy by over heating it while annealing in a flame. This myth needs to die.
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