Circular base switches are not a problem to install. Just drill the proper size hole and slip it in...

I have a rectangular shaped base switch that I want to install.
Problem is I have no idea how to cut a rectangular hole to install this switch...
at least with my tools.

Can anyone suggest a fix for my dilemma?

 

http://www.lawson-his.co.uk/scripts/...Hole%20Cutters

Some thing like these simple hole punches would solve the problem.

 

drill two round holes and file it out with a small file or a dremel....tape around the opening will keep the scratches down

 

^Yep I think the dremel tool would work the best. If you get one with the circular cutting wheel there may be no need to drill holes.