[Stoves] Good photo of a three wall stove

[Crispin Pemberton-Pigott]

Dear Andrew

> It looks like an awful lot of ash for just 6 hours

I was appalled.

They claim to be burning 50 kg per day which is something like three times
what others are burning for the same task.

>To my mind losing a bit of energy in charry ash is worth it if excess
secondary air is controlled. 

Yeah - if that were only the case. My expectation is we can reduce the fuel
needed to 8kg with an expectation that a purpose built stove is worth
having.

Regards
Crispin burning out the rest of summer