I'm building model airplanes. Nearly everyone bends up their landing gear out of music wire (0.9% carbon, low alloy, hard drawn wire), and either holds the wheels on with these really ugly collars, or they epoxy on washers.
The washers won't come off when you want them to, and do come off when you don't. I'm thinking up a few schemes to do a nicer job, some of which would go a lot nicer if the steel were drawn a lot more than it is. I don't want to go using my nice 5-44 die on hard steel, nor do I want to try drilling .050" holes.
So: how to anneal, and how to just draw the temper a bit more? For annealing I expect that I can just clamp the thing in my vise (both to hold and to limit heat travel), get the end as hot as it'll get with a propane torch, and let it cool. To just draw it, should I do something like filing a spot shiny, then heating it to blue or purple, then letting it cool? Or is there a better way to do this by eyeball methods?
Comments appreciated. I know how to make it work with rocks and sticks, I'd just like pointers on using hammers and screwdrivers for the job...