Originally Posted by coewar
I don't know what kind of crazy grinding machine would do that. I have a drill but really? I tried using a little grinding wheel I have for it and it seems like it would take hours.
Use an angle grinder with a grinding disc. It took me about half an hour to grind down the drum lip (the small rolled lip of a closed end drum, not the large lip of an open end drum). With a little grinding the Weber lid will fit snugly.