[Stoves] Wood-ash as insulator

[François Sorba]

Hello everyone,

 

I am currently trying to build a wood saving stove (rocket stove model). All
the info I gathered are saying to use wood-ash as an insulator between the
outside layer of sheet metal and the L-shaped combustion chamber.

 

Do you know if I could replace wood-ash by anything else ? Something easy to
come by
 Something like dry sand for instance ?

 

Thanks!

 

François

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