Classic (Sells Mendel style) Bar Clamp, in two part harmony.

When rebuilding my lasercut wooden printer, I decided that one of the things that could use improvement over the Prusa design was the bar clamps.

Now that the Y carriage is non-adjustable, the position of the Y axis smooth rods relative to the frame is critical, and the Prusa style bar clamps don't do a good job of enforcing the spacing between the two rods.

I looked at the original (Sells mendel) Bar clamps, and decided that with 3 parts, they were more complicated than I liked, so I desi