Drill bit jig

Abstract

A drill bit jig includes an elongate member, two jig securing elements and a drill bit guide. The drill bit guide includes a plurality of through holes where the axes of the through holes are parallel to the axis of the elongate member. Each of the plurality of through holes in the drill bit guide has a different diameter for accommodating drill bits of different thicknesses. The jig securing elements each include an L-shaped bolt and a door protecting material encasing one of the straight sections of the bolt. The drill bit jig also includes a core check to determine if a hole being drilled along the width of the door is straight.

1 . A drill bit jig system comprising:
 an elongate member;   a hollow metal door bit comprising a shaft body without flutes and a bit tip;   a drill bit with flutes;   two jig securing elements; and   a drill bit guide having through holes for receiving the hollow metal door bit and the drill bit therethrough for drilling, wherein the hollow metal door bit drills through a filler material of a hollow metal door in response to drilling the bit tip through the filler material, wherein the drill bit drills through a spline of the hollow metal door after the bit tip of the hollow metal door bit creates a starter hole in the spline.   
     
     
         2 . The system of  claim 1 , wherein the hollow metal door bit comprises a shaft body and a bit tip. 
     
     
         3 . The system of  claim 2 , wherein the hollow metal door bit comprises a hole extending through the shaft body adjacent the bit tip. 
     
     
         4 . The system of  claim 3 , wherein the hole is sized and shaped to receive a wire therethrough for running a guide wire through the hollow metal door in response to extracting the hollow metal door bit from the metal door. 
     
     
         5 . The system of  claim 2 , wherein the hollow metal door bit drills through a filler material of a hollow metal door in response to drilling the bit tip through the filler material.