Using hole saw drilling guides

[astroracer]

I posted these up a while back but thought I would show them in use during a new console build for my '56 Chevy Wagon. http://www.homemadetools.net/forum/s...-6188#post7430
I am building the console top out of .090 thk aluminum sheet. I developed patterns using foam core board and, after I got the top chunked out on the shear, I used some ScotchBrite and a sanding sponge to make it satin.

All cleaned up and ready for the work to begin.

I laid out the gauge and A/C holes and got to work cutting out the gauge holes.

I used regular hole saws to cut the three holes. Two 2" holes and 1 3 1/4" hole. I also have these "fixtures" I made to make clean cuts with the hole saws. These guide and control the saw well enough that they make nice clean holes very easily.

I see people are asking for plans but these are something you just make on the fly. No plans needed. Cutting an initial hole in a piece of wood, with the saw you want to use, gives you a perfect guide to make clean holes. As you can see I have multiple holes cut into numerous boards. I have a whole selection of these now and rarely need to cut a new one.
Mark