I did another inspection and cleaning this past spring, so I can post pictures and description when I get the time (sooner than seven years this time.) It was not much different from the first inspection, though the perlite-clay riser is getting old. There was not enough ash buildup to obstruct the bell exit.
A lot of people cry when they cut onions. The trick is not to form an emotional bond. This tiny ad told me:
rocket mass heater risers: materials and design eBook
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