I took a bunch of pictures of a neat benchtop forge that my Blacksmithing instructor makes for friends (but won't sell, due to liability reasons). I uploaded them to my photobucket, but let me ask Will if I can post them here.
His venturi is horizontal, but enters at the same point.
The one in my Photobucket is a made from a piece of 6x6 Schedule 40 square tubing. The back is open with a set of bricks to close-off as much as you need, while still allowing for heating any ~5" section of a long iron.
Last edited by lazlo; 06-24-2010 at 04:37 PM.
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."