On Saturday, April 9, 2016 at 4:18:19 PM UTC-7, John Doe wrote:
I need to cut a 1/2" square through 1/4" aluminum. It doesn't have to
be centered, but the dimensions of the hole need to be correct.
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Your subject said "with NO TOOLS". I'm not sure how you can justify
using even a drill bit with the 'no tools' restriction.

I'd suggest that with some sand, some durable fingernails, and months of
time, you might be able to erode a _somewhat_squarISH_ hole in a thin
sheet of aluminum.

NO tools? Really?

Lloyd