I was moving a 6000lbs cylindrical grinder, by myself of corse, I managed to drop it off the rigging, only fell 2". Unfortunately that shocked the table cross slide enough to rip 2 teeth off the gear rack. The damaged part is made of cast iron, a new one costs 5k.

I'm looking for advise on how to build up the material in the damaged area so I can remachine the missing teeth. I'm a machinist but have some welding experience too, never with cast iron.

Help please