I went to replace the blade cutting edge on my Takeuchi TB145 and while I am at it, I want to straighten the blade since it's curved back like banana and new edge won't fit well.

I already cut away cutting edge, bottom and back side of the blade. I anchored the side of blade to immovable object and tracked & pushed with arm with no success.

Any other ideas apart from throwing it into 300 ton press?

I already cut away cutting edge, bottom and back side of the blade. I anchored the side of blade to immovable object and tracked & pushed with arm with no success.

Any other ideas apart from throwing it into 300 ton press?