Anyone have any experience on how to clean the residue of the honeycomb working panel.
try typing “clean honeycomb” in the search field, you will be amazed at the result 
I take mine outside and use oven cleaner.
As a warning to people who have aluminum honeycomb, don’t use oven cleaner if that’s the case. The reaction is not pleasant.
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True, or any other cleaner that contains caustic soda or lye.
It will also react with zinc coatings so galvanized and zinc-aluminum coated steel will eventually start to rust after a few cleanings with oven cleaner but not enough to really worry about.