Ah yes, Doc has the ideal situation for getting it done, a S-I-L with a machine shop
I've welded up the corners and resurfaced with a right angle grinder on a couple of anvils. Not nearly as accurate or flat as machining but it worked in both cases. Can't remember what the rod was but think it was a mag rod that was supposed to work harden, you pounded the heck out of it after running your beads. Been out of the loop too long but any good welding supply outfit should be able to help you out and I bet Matt might know with out the help.
If you decide to buy a new one Doc just throw that old one in a bring it out with ya next time ya come
Man can't have too many anvils laying around