What gauge? How small do you want the pieces?
For a large sheet like that, if I simply wanted it cut down into
more workable “slices,” I’d use (depending on gauge) the guillotine
shear, beverly shear, or a pair of tin-snips. 22 and thinner, I’ve
even used a pair of my Fiskar scissors, which works beautifully.
If you’re looking for a totally mechanical way to do it, you can put
a jeweler’s saw blade into a scroll saw (or just use a fine
woodcutting blade) or use a cut-off disk in your dremel… but you’ll
likely go through a bunch of cut-offs before you get through a cut
that’s 2’ wide!
Hope this gives you some ideas!
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