Does anyone have a router with a plunge stroke travel of 5 inches or more? Stopping to take out/put in the bit extender each time seems pretty inefficient to me! Also, its going to get really hard to keep the shaft vertical (the base of the router horizontal) with a 5" bnit hanging down. Routers are great for housings, but if you really want a clean, deep mortise, look into a chisel mortiser. I know Hitachi makes one, but I'm not sure if it's still being exported. CB.