Thumbnail Filmstrip of Carter Strongbore Boring System (PKG) Images
Used for drilling peppermill blanks and for making depth holes in vessels. The Strongbore is a drill bit extension system that is made to hold standard 3/8" shank Forstner Bits. It is made of 3/4" diameter steel for stiffness, and has a #2 Morse Taper to fit in the lathe tailstock. It does not require a drill chuck and has extensions that are added to make it longer as needed.
The Strongbore Starter Package is made up of three pieces: one #2MT Holder, one 3" Extender piece, and one 3/8" Shank drill bit holder. The pieces screw together and are locked with a set screw. Flats are provided for wrenches to loosen. Overall length when assembled is 9". Extra 3" and 6" extensions are available extensions are available.
Not Compatible with the Colt Maxi Cut Forstner Bits