Blind Routing Triangle Stock

If you want to install new anti-vibration mounts in an existing fuselage, you may find that the large balsa reinforcing triangles interfere with the ¼-20 T-nuts. To allow clearance, insert a long mandrel through the firewall from the front, attach a small grinding wheel, switch it on, and pull steadily on the drill until you have the necessary clearance. Adapted from 400 Great R/C Modeling Tips by Jim Newman, Volume II, an Air Age Media...