I created this simple drill guide as a tool while fabricating an eggbeater style antenna for amateur radio and weather satellite work. The antenna design itself is not mine and can be found using the following URL:
The drill guide is pretty simple. To use it, print the drill guide, scaling it to fit snugly over the plastic pipe you are using to make your antenna. Mark a straight line along the length of your pipe. Slip the guide on your pipe and align the line on the top of the guide with the mark on your pipe. Note that there are 2 marks on the top of the guide. One for the small set of holes and one for the big set of holes. Hold the guide in place and run your drill through the holes into your pipe.
A discussion about this antenna can be found at the following URL: