This machine:

http://www.wttool.com/product-exec/p...oll_WT_Import_

is claimed to be good for up to 20 gauge mild steel.

It seems that 5052-H32 aluminum is the stuff to use, if you're going to
use aluminum.

What thickness of this stuff should I expect a "20 ga mild steel"
shear/brake/etc combo to handle?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
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