Here are a few more pictures. The aluminum strips were too thick in the beginning, so I had to cut a bit off the thickness of the sanding block. If I went too far, I would have put thin shim stock under the aluminum strips to space them higher. It definitely takes some tweaking, but once it is set up, it works really nice. The sandpaper is 80 grit self adhesive auto body stuff that comes in long strips. I cut 1/2" wide pieces.