Patent ID: 6659695
Filing Date: 2003-12-09
Classification: B23B,Y10T

Abstract:
A jig comprising:a first member, said first member being configured to lie against a workpiece; a drill guide bore through said first member, said drill guide bore having a cylindrical interior surface, said drill guide bore having truncated threads extending radially inward from said cylindrical surface of said drill guide bore so that a drill can be guided through the drill guide bore and against said truncated threads to guide the drill to drill into a workpiece lying against said first member; and a drill guide bushing, said drill guide bushing having an exterior surface sized to fit within said drill guide bore and having external threads sized to fit said truncated threads, said drill guide bushing having an interior drill guide hole therethrough so that said bushing can be inserted into a drill guide bore for guiding a drill of smaller size than said drill guide bore.