Save yourself a lot of aggravation. Do not buy anything from "Harbor
Fright". All they sell is junk and it never works like they say. You would
have a lot more fun throwing the money in your toilet and watching it swirl
around as you flush.


Harbor Freight has a $35 cutting tool that can handle the job according
to the advertised specs. It sorta, kinda looks like an angle grinder,
except that it has a short arm and a reciprocating tooth out one side.
I figure I can drill a 3/8" hole, clamp a 2x4 to each side of the sheet
as guides, and just make a run with the cutter. Anyone have experience
with these things? Do they leave a clean edge?