You need to weld a pointy thing off the back side of the blade... (Image removed from quote.)
Did a little gas at collage a very long time ago But to be honest I won't be buying any, if I need any welding doing I ask my Mate 'Kev the welder'
I think I would end up loosing an eye if I did that Threeme OK I will think about it 4" x 2" (Image removed from quote.)