For many years I had a 75 year old Walker Turner drill press without a hand crank to raise and lower the table. Whenever I changed from a center drill to a drill bit, or from a drill bit to a tap, I would lose my alignment by raising or lowering the table. The simple fix was to use a smaller secondary chuck with a straight arbor to gain any extra length needed. Starting a tap with a drill press, of course, makes sure it's straight, even if you have to finish it up by hand.
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