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Them weird clumps in the stove ?

babybart

babybart

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Dec 2, 2014
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814
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MD
I get them no matter the wood I burn, red/white oak, white pine, poplar, hickory. They are only front center where the air enters the firebox.
 

Del_

Career arborist
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Feb 18, 2002
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26,700
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U. S. of A.
My Jotul F600 CB must be burning that carbon. Ash in the Jotul drops through a grate in the base in the stove into an ash pan that has a separate door. The gaps in the grate are about 1/4 inch or so. Not a clinker in 20 years.
 
moresnow

moresnow

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Apr 16, 2015
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Location
Iowa
My Jotul F600 CB must be burning that carbon. Ash in the Jotul drops through a grate in the base in the stove into an ash pan that has a separate door. The gaps in the grate are about 1/4 inch or so. Not a clinker in 20 years.
That's interesting. Very common here. Mostly with Elm. I never get it with softwoods. Actually barely even get any ash when I burn pine.
 
panolo

panolo

Seldom right...Always opinionated!
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Central MN
HappyHomeowner

HappyHomeowner

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Jan 24, 2021
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15
Location
USA
Yes I get those all the time I think they are as others suggested loosely fused mineral materials probably mostly silica and stuff from soils. I get them from every type of wood I get here, but, every type of wood I get here grows in soil with sand and limestone, granite, sandstone in it in relatively high ratios.
 
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