Draw a crosshatch to locate the first hole.
Drilling workbench dog holes. If your entrance and exit holes both hit the mark the hole is plumb. That depends is usually the answer i give and that probably frustrates more than it helps. So i present my foolproof secret to. You can then use the top hole to create a row of dog holes across the length of your workbench and if you prefer a few dog holes along the bottom of the workbench.
To drill the holes in the two opposing face vises and the holes in the bench between the vises i had to make a second jig. So seeing as i just built a new workbench myself and had to ask myself this question i thought it was time to come up with something more definitive. The length of the 2 4 will allow you to put holes anywhere you please on a benchtop. This is where your dog hole diagram comes into play.
Clamp the guide in place along with a backer board to prevent tear out on the bottom of the bench. Then position the drilling guide s alignment marks with those on the bench. Also discussed is selecting the right type of drill bit. Now use a 3 4 brad point guided by the holes in the drill guide to drill through the workbench.
To drill the dog holes between the two face vises i built a second jig. The guide to dog hole placement. Where do i put my dog holes. The spacing and measurements on this one were completely different from the first but the principle was exactly the same.
Now clamp the 2 4 on edge to your benchtop and use the plumb holes as an oversized doweling jig to guide your auger bit. After drilling your planing vise dog holes you ll have 2 holes stacked upon one another. 3 4 dog hole bushing not required but highly recommended more below 3 4 auger bit more below crosscut saw drill and other assorted tools length of 2x4 some 3 4 plywood and other scraps. Drill through the 2 4.