What are these clinkers in my Napoleon.

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Tom123

Tom123

Burning Hunk
Oct 11, 2014
176
East Granby CT
Several times while shoveling ash and coals out of the stove I have noticed chunks of stuff roughly the size of a bar of soap and a grayish brown color. It is always near the front where air comes in. Is this some kind of mineral formation? I wish I took pics.
 
Yeah they're what BG says, used to get them with the blaze king once in a while and often in my old pellet stove.
 
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Burning doug fir I get more clinkers than ash.
 
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Seems like when I burn elm, I get more clinkers.
 
I have been burning allot of elm and cherry.
 
Common and nothing to worry about. Here's mine.
 

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Highbeam said:
Common and nothing to worry about. Here's mine.
Click to expand...

I think I passed something like that once through my urethra . . . or at least that's what it felt like. ;)
 
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I think my brain has felt like that a few times, especially in my youth!
 
Nah, you can have damp wood and no clinkers and very dry wood that produces clinkers. It is the silicas in the wood. Some species uptake more than others.
 
I have had them with burning loads of maple weird how people get them with different kinds of wood from different areas of the country
 
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