i was skimming the internet today and found something cool.

www.thefabricator.com

i am still reading through it and am finding it pretty damn interesting.

thought y'all might find it interesting too.

Nice find and good info. Found what had been eluding me till I got some answers from fellow FSB ers of course google never found this easy to use chart that this website has http://www.thefabricator.com/Articles/Photos/653/fig1.jpg