Workbench dog hole template

A "dog hole" drilling template, on 4 inch centers, starting (here) 2 inches from each edge.

- The corner of the workbench is used as a reference -- the template will align on the work-top edges..

- Remaining holes can be propagated with the template once it is made.

- Note that any errors will propagate and multiply along the surface, so make an accurate print and be cautious as you go along the tabletop.

- Ideally, make small marks on the table with a ruler and a square to ensure that they line up with the template holes.

- Note that a spacing of 2-inch and 4-inch means the worktop will need to be an exact multiple of 4 inches both length and width to have a 2-inch mullion (margin, spacing from the edge) on all sides. If you don't have a very strong preference, then don't worry about it. Just be aware :-)

- It is very important to make perpendicular holes. Use a drill guide to ensure the holes are square to the work surface. Start with pilot holes to find the center of the dog hole.

- When drilling away from the corners (where registration is guaranteed by the model's two fences), use the flat guide with pegs to register the guide in at least two existing dog holes. As noted above, the errors will propagate, so check before drilling.

- Once all the pilot holes are drilled, you may use the drill guide to help the boring bit (spiral, forstner, paddle) align with the center of each hole when starting the full-sized holes. Note that this action will remove the pilot hole guide from the center of the hole.