[permaculture] cob mixing?

Toby Hemenway toby at patternliteracy.com
Mon Mar 17 18:01:31 EDT 2008

People here in Portland and elsewhere (Sun Ray Kelly in Washington) have 
used a small tractor, piling up the materials in the street or driveway 
and running over it, scooping it up with a loader bucket if there is 
one, and driving over it again while water is mixed in. Works very well 
for large batches, but, obviously, the ERoEI is poor compared to hand 
mixed cob. It makes us all grateful (again) for cheap oil.


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