Got a I suspect new-ish Lodge cast iron skillet with a small void, maybe 1/16" in diamter. What's the laziest way to fill this in? I'm thinkingabout just peening in some soft steel wire or copper in there to just plug it. burned up oil will coat in in the end. Have access to an oxyacetylene torch and pickup any sort of rod being sold. Not really sure what type of cast iron us used in these. It makes black dust if you grind it and it takes as while to get all the dust off.