[Stoves] small unit feeding continuously is not a small idea

[Richard Stanley]

Ok, Crispin, and Alex: 

But was the hopper lid really air tight? In tests we tried several years ago and with a friend in California, any air leak what-so-ever was a recipe for what you described. When we made it really air tight (using a screw thread cp  or at minimum a turret locking one either accompanied by a gasket), it seemed to work well.  
Seems that  alternatively, one needs some equivalent of a water trap at the base of the feed tube. Hmm: Any handy liquid or for that matter fine low density, readily available granular solid put in the bottom of  J tube, down around and up- thru which, the fuel passes, that is not going to soak into the chips or pellets or mini sausage briquettes yet will prevent back flow of gasses air tight lid ? 

Richard
in the NW of the US part of the Americas
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