I am going to be making a small spindle for a tiny machine. I planning on using a scaled down version of an R8 collet but the top portion will be different - much different. Either way, that part doesn't matter much relative to what I am trying to figure out.
This collet will be about 3 inches long and about 3/8" in diameter. I would like to heat treat it so that it lasts for a while (till I come up with something better). I have plenty of machining experience, but about zero heat treating experience. I don't even have much in the form of anything to do heat treating.
I have a propane torch (kind used for plumbing & soldering). I can get some fire bricks to make a small enclosed area to contain the heat. I know that small, long pieces like this can also turn into funny shapes after heat treating.
Can anyone suggests a good material choice for this, and if you don't mind, a method of heat treating it based on what I have here in the home shop?
Thanks a bunch!