Thread: Straightening warped tang

I'm with Charlie on this one. I 'd try the vise and sandwiching the blade between two fairly healthy pieces of aluminum or copper as either will absorb heat faster than steel.

I used to pull the surface case hardening on Springfield rifle receivers for drilling scope mount holes for the screws by heating a piece of copper tubing that was pressed against the surface of the receiver rings. I'd heat the copper red hot with a torch and it would pull the case hardening in an area the size of the copper tubing. Made it a LOT easier to drill.

You could probably by a foot or so of 3/4" copper tubing, cut it into 1" lengths and then smash them flat with a hammer. I'd think a couple on either side of the tang and then tightened down in the vice would give you a good heat sink provided you didn't get crazy and heat the whole tang red for any length of time. Might think about wrapping a wet cloth around the blade as well and watch for steam. The wet cloth will also act as a heat sink and help protect the blade.