On Tue, 7 Oct 2008 21:08:31 -0700, "Stupendous Man"
wrote:

The boss got me a ten foot sheet of aluminum to make some odd shaped cargo
boxes for his 61 Land Rover. I laid out a nice pattern to make them with as
few riveted seams as possible, thought it seemed a bit tough to cut but has
no grade markings on it. I test bent a piece and it cracked. I called the
office and asked what was on the receipt. He got 1/8 6061 T6 on sale. I
guess I will be annealing all the bend seams in the morning with a rosebud.


MINIMUM 1.5 times the thickness of the metal for bend radius - even
annealed (or normalized) is a good rule of thumb with 6061. about
double that, at least, for 7000 series.
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