Ruined heads?

I read it somewhere. I suppose in a high rpm race situation, you wouldn't even need a gasket between the ports.
grind it all out and let the fuel mixture go wherever it wants. LMFAO
would it be possible to weld them back in or is that too much effort for an iron head? I did something similar to my aluminum intake and I had it tig welded back to a workable size then I tried again.
Only if it was the last set on earth.