Here's a picture of one of the fixed jaws having the slot machined. I was trying out a quick and dirty shield made from a piece of a 2 liter pop bottle screwed to a couple pieces of wood. The shield was fairly effective but not as good as I'd like. I was able to make use of my Vise Stop which you can see on the left side buried under the swarf. Bigger...

Here are the pieces for 2 sets of the jaws (I made 4 sets). These were made using a pieces cut from some 3/4" x 2" bar stock I had in my "stash". Bigger...

This is how I envisoned the clamps being used. Bigger...

Here's a few of them in use. Works great! Bigger...

Here's a dimensioned drawing of the fixed clamp. It's also available in PDF form, and Rhino form. The drawing doesn't show it, but I also milled a small relief in the inside corner of the clamp using a 1/16" endmill with the workpiece mounted at a 45 degree angle. Bigger...

Here's a dimensioned drawing of the moveable clamp. It's also available in PDF form, and Rhino form. Bigger...