I'd like to have a Kurt vise too Paul. That vise is a Chinese clone of the 4 inch Kurt and I think it ran about $100. It is surprisingly square and less than .0004" runout on the stationary jaw. It has the lock down feature like the Kurt so the tighter it squeezes, the more it pulls the movable jaw down. Like I said before, I'm not a machinist, I just get lucky sometimes with what I have. I bought most of my good tooling at auctions and, like you, I'm sure, I've made a bunch of jigs, hold downs and nick nacks that were good for only one project. I'm still learning though.