Stop in for a cup of coffee

WV64Signet said

What will take this gasket residue off?

It's baked on... just this one side

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A snap lock disk or what I like is a flat honing stone for a knife about 6" long.

https://www.mscdirect.com/browse/tn...EAQYByABEgJNUPD_BwE&mkwid=|dc&cid=ppc-google-