A guy on facebook posted a video of his home made case annealing machine. It looks like it works well and is pretty slick. He also posted instructions and a parts list for building your own. It looks like it would be a fun project and I think I'll build one.
I have a case annealing tool that I purchased from the Woodchuck Den for less than $25.00. It is a length of small copper tube bent into a circle at the end with about 10 holes drilled to point inward. It clamps to the nozzle end of a propane torch, and it goes on and off in seconds. Stand your cases in about 1/2 inch of water, light the torch/annealer, direct the flame to the desired spot on the case and when the proper color change happens, knock it over into the water to quench.
I've seen some you tube where the paint changes and no color change to the brass and some that say drop in the water just as it changes color. Do you see the brass turn slight blue? Where did you get your temp paint and did you choose 700 or 750? The places I've seen charges about 35-40 dollars a small bottle. Does this stuff last or does it dry out?
What's wrong with just putting the cases in a pan of water and heating them with a torch? Annealing brass cases isn't rocket science. Heat the case necks to red and you're done. There is no need to quench in water.
There is some art and science to annealing brass to little heat does nothing to the brass to much heat will destroy the brass. http://www.6mmbr.com/annealing.html
There is nothing to it. You guys are way over-thinking this.
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