To consistently position a hole in multiple workpieces, clamp a framing square to your drill-press table.

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To consistently position a hole in multiple workpieces, clamp a framing square to your drill-press table. The two legs of the square act as both a fence and a stop. Squares don't come with dust-relief grooves, though, so blow away chips and dust after each hole to prevent debris from becoming trapped between your workplace and the square.
—from the WOOD® shop