On 10/19/2013 8:31 PM, Lloyd E. Sponenburgh wrote:
5x10 ft plate that is 3/4 inch thick.

middle along its length. The worst un-straightness is in the middle
and it is appx. 1/4". I would like to straighten it. How can I
realistically do it, if at all.


Heavy forklift between strategically-placed supports.

You have both, Ig.


Winner!