Nice work Northwood and Ian. Handwork has it's rewards, even if it isn't a "Fast" process. The "Kick" for me is to maintain precision BY hand. To that end, I have used laminate flooring "Planks" for templates when straight, "Square" exact edges are needed. The planks measure up true and square using a machinist square. I've clamped a plank (or several) on the panel (wood or metal) to be "Trued Up". A three-flute, flush-trim, router bit, with a CLEAN free spinning bearing, follows the true edge of the laminate "Template".