I've been wanting to make me one. I have a friend that made a small tank and it worked great. He had an old barrel and it took all the rust out of the bore. I may have to go ahead and do it.
That is pretty fancy! My brother ran about 500 rounds of corrosive ammo through a polish tantal and didn't clean it good enough. Almost the whole thing is rusting. I'm gonna get him to try this over the weekend.
Thanks for the post Sheldon!