I certainly don't claim to have any expertise at any sort of welding, been to a couple of welding schools at the vocational school but was never taught this. I have a grate in my woodburning stove that I would like to raise an inch or so. I believe the grate is cast iron. I'd like to weld something onto the bottom legs to accomplish this. I tried welding a few things to the legs but to no avail. I'm using an ARC welder, tried 6013 and 7018 and I can't get anything to adhere to the legs. Any advice on welding to cast iron would be appreciated.