To get the spring to stay in to bench dog the openings need to be angled.
How to make dog holes in workbench. Starting with the drill perpendicular to the bench dog an opening was made and then the drill was slowly rotated to create a sharp angle towards the end of the blank. But a board larger than that must be secured between the vise dog and a bench dog. Click the image to download the pdf diagram to help you place your first dog holes. Ideally space the dog holes so you can secure a board of any width to the workbench ken so start by measuring your vise s capacity.
The fence allows me to add the bench dog holes at a perfectly consistent distance from the edge of the workbench. Learn how to easily make affordable wooden bench dogs and a simple quick accurate way to bore bench dog holes and holdfast holes. Once both angled openings were made i used the drill to bore out a rough trough between the angled openings. Mark the row of dogholes on your bench aligning the mark with the dog on your bench s vise.
Draw a crosshatch to locate the first hole. Remember that you want to have your holdfasts in hand first so you can measure their reach. Also be sure to measure the post of your holdfasts to determine the hole size and if you are unsure about the grip test bore some holes to determine if any counterbore is necessary to facilitate holdfast grip. Links mentioned in the video.
For example if the vise s jaws can hold a board up to 6 1 2 secure any board up to that size between the jaws. Also discussed is selecting the right type of drill bit. Then position the drilling guide s alignment marks with those on the bench. To make a lot of consistently sized bench dog holes i setup a plunge router with an adjustable fence.