60\ & 65\ Shoulder x .330"
Our special 65° shoulder Sight Base Cutter designed to cut
dovetails for both standard Colt factory and mil-spec 1911 Autos,
and for replacement sights like Wichita Hi-Mount, older Bo- Mar
and others with a 65° shoulder. Some makers use a
60° dovetail on their rear sights and we also have a cutter
to match them. For low-mount adjustable sights use the
Standard Sight Base Cutter shown on this page. Actual
cutting diameter is .330" so more than one pass will be required
to install most sights. This is done on purpose to allow for factory
variations in base width as well as milling tolerances.
CAUTION: For use in milling machine only. High speed steel, 2" (5cm) long, 3⁄8" (9.5mm) diameter shank. 60° or 65° shoulder. DO NOT EXCEED 700 rpm, HIGHER SPEED WILL BREAK TEETH.
1911, Issue:09, Page:061
Big Book Catalog, Issue:65, Page:138
Big Book Catalog, Issue:65, Page:492