Clamping a workpiece squarely for benchtop drill press

I was making some clamp dogs for a portable workbench and needed to drill 25mm holes in the prepared squares of wood.

After drilling a small pilot hole I then had to clamp each piece in my press vice and was concerned about getting them clamped so that they would be square (90°) to the drill. If my holes were not accurate then the dogs would not sit flat when slipped over the 25mm pegs.

I suddenly had the thought that I should look at the problem differently.

I lightly clamped the wood block then turned the vice upside down on the drill table. I loosened the vice and, by pressing on the body of the vice and, at the same time using a finger to press the wood down, re-tightened the vice.

Now when I presented the vice with the work clamped in it I could be confident that the work was SQUARE to the hole saw.