square hold down

How does that work? Is there something off to the right side affixing it to the anvil or does it just cap the part you are working on?

I put a little bit of a taper where the peen will be, and it's lightly wedged into the square tubing to keep it from rolling while I'm punching.

No hardy on my anvil since the heel's broken off, and I got tired of it moving on me. The tubing's just sitting there, no attachments, but between it and holding the punch in one hand, I had a lot more control. With smaller stock I could ding the tubing in a little for a smaller diameter. Theres a forum for it under shop tricks.