I have to drill out some mortises that are NOT centered in table leg I am working on. That means I can't press the bit down to make a hole and flip the piece to see if the point goes into the hole I just made. I have been experimenting on some scrap but I am always a little off. Why do I care? Before I start I cut a line with a utility knife on the sides of the mortise to "catch" my chisel blade but if I am a little off, I lose one of the lines. Am I just being too picky or is there some tip one of you can give me to get it dead center? BTW, the mortise is 1/4" wide.
TIA.
Dick Snyder