Marked up Shear Web root for LWA3/4 hardpoints and discover the need for W18. Had missed this in my preparation, and discover I have no 0.16" 2024-t3. Decide to use the 0.32" I have spare from not using the plans Nose Gear Door, and sand the crap out of in in prep. Made them up and prep sanded.
Made a special hotwire saw and cut the attach bolt cutouts. Complete woftam, use a hacksaw blace next time. It works fine to cut undersized, then enlarge with a straight file, finishing the corners with dremel grinding bit and sandpaper.