Use a metal "nibbling" tool. Radio shack carries them:
http://www.radioshack.com/category.a...0%5F001&Page=1

Joe
W3JDR

wrote in message
oups.com...
I need to make a 1" x 0.5" square opening in the front panel of an
aluminum enclosure. I can handle round openings, however how do you
make a neat square opening? Thanks in advance.

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