On Wed, 18 Feb 2009 13:07:31 -0500, "Ed Huntress"
wrote:


"Ned Simmons" wrote in message
.. .
On Wed, 18 Feb 2009 08:27:22 -0800, Bruce L. Bergman
wrote:



It's the T6 part that'll getcha - the stuff that is pre-tempered.
Beg, borrow, Garage Sale, steal or (Gasp!) buy an oxy-acetylene torch
rig to heat up the aluminum and take the temper out of it before you
bend, and you'll be good to go. If you don't, you'll see it cracking
at the bend right before your eyes.

As long as the bend radius is greater than 3/4" or so there won't be
any cracking in 6061-T6. The bend radius in the photo in the original
post was much larger.

--
Ned Simmons

Yeah, but he isn't going to bend 1/4" stock at 40 ksi yield over his thigh,
either, unless he has steel thighs. He'd need some kind of jig.


1/4 x 1-1/2 will bend at 625 lb-in. A 30" length centered on your
thigh would bend with 40 pounds applied to the ends, which doesn't
seem unreasonable for someone of average strength. Goalie pads might
help with the thigh bruises g.

--
Ned Simmons