I use this tool rest on almost every knife now. 2" and 1 &1/2" square pipe welded with 1/16" strips button welded inside the 2" pipe for a snug fit. Very adjustable, very easy to assemble. There is a weld seam inside of the 2" pipe you will have to use a hand file to make smooth. I use a similar gizmo like this on my disk grinder.