New "domino killer" dowel guide for drills

You won't be buying standard drill bits.
The outside bits are left hand twist.

View attachment 381918
The CMT bits, for their Boring Jig, are also right and left handed, and are solid carbide. Expensive though, ranging between $25.00 and $30.00 each.

You do have to search for them, but I’ve done it here, but when shopping note the shaft diameter and the overall length. It might not work with all fixtures.



 
The CMT bits, for their Boring Jig, are also right and left handed, and are solid carbide. Expensive though, ranging between $25.00 and $30.00 each.

You do have to search for them, but I’ve done it here, but when shopping note the shaft diameter and the overall length. It might not work with all fixtures.




Those are the typical line boring machine type bits, steel shank, carbide tips. They have 10mm shanks, a depth adjusting set screw in the end, a flat face for the attachment screw. The black/orange paint indicates rotation direction.
These same bits also work in concealed hinge boring machines, which require 8mm holes.
The usual line bore holes are 5mm or 1/4", so all 3 sizes are available easily.
 
Back
Top