Drilling a straight hole can be difficult because you can only see one side of the bit at a time. Without a lot of practice, many of the holes end up perpendicular in one plane and not so perpendicular in the other. Drilling with a conventional guide (2 blocks at 90°) works in some applications, but when using short bits there's not enough room. This is quick, cheap & easy drilling guide will help you bore accurate holes even with small bits. Using two small mirrors, it works similar to a dressing room mirror to help you view the bit from all angles. When all the bits are parallel, start drilling. It's that easy.
Step 1: What You Need
Basically what you need to make the guide is 2 wood blocks, 2 mirrors and a means of sticking them together. In my case, I used double stick carpet tape. If you don't have 2 small mirrors, you will also need a glass cutting kit & a straight edge.