Drill holes: When drilling, gently mark spot with center punch or sharpened nail, first drill through using a small drill bit, then drill hole to specified diameter. On the "painted face" of one stick, measure 1/4 inch from its butt end and drill through 3/32 inch diameter (for a tight fit), and tap for 6-32 plastic screw. Measure 1/2 inch from the butt end of both sticks and drill through 7/64 inch diameter, crosswise to the "painted faces." Best to chuck both sticks in the vise, one atop the other, and drill through both sticks at the same time.