How long does your burn pot last? Specifically on a harman PC45.

[Bioburner]

Thanks for the Info...
I Imagine the black grease substance comes from sugar in the corn..

If the corn is dry one has little issue with the black crud but corn has a ignition temp that is about 200 degree higher than wood. Combine that with some higher moisture(corn often sold above 13%)and your fighting a lower burn temp that start the dark gunk.
Picture is the stove setup for straight corn burning. Notice the nice gray showing proper burn.

 

[Tonyray]

If the corn is dry one has little issue with the black crud but corn has a ignition temp that is about 200 degree higher than wood. Combine that with some higher moisture(corn often sold above 13%)and your fighting a lower burn temp that start the dark gunk.
Picture is the stove setup for straight corn burning. Notice the nice gray showing proper burn.

yes.. I see the stir Adapter.

 

[OverlookEGR]

Here is a pic of the degradation on my burn pot. After restricting the air somewhat, i am getting black soot on the inside of the stove

 

[bags]

Time for a new one.....

 

[Bioburner]

Maybe I asked but when was the last time the stove had the gaskets checked or replaced? Air not going thru the pot but around doors etc can lead to improper burning and fouling up the stove and stove feeding extra fuel too.