I made a dirt harrow for my skid steer similar to some of the production ones. It has five rows of teeth made of 3/8 x 2 steel plate that I hard surfaced on all three edges. Works great but using it on gravel roads and parking lots has taken it's toll on the front and back rows of teeth that you bear in with on real hard compacted gravel. I'm getting ready to redo the worn and broken teeth and was wondering if I could find a harder steel that's also weldable to not have to hard surface them. The frame is made of two inch square tubing and I can weld to any of the three sides of it.