I've been working on my "backwall" as part of setting my shop back up. When I last moved, I seem to have tossed or lost my chisel holder. So, I've made some new ones, but have had some unexpected challenges. "Seriously, what sort of challenges can you have making chisel racks?" The racks are similar to these by Blue Spruce, but made from some pine reclaimed from packing crates. The problem that I ran into was with chamfering the holes. What's the best way to do this?