I've tried searching for this but nothing came back. Has anyone tried making cob
from Texas black gumbo clay? It seems to turn to asphalt when dry without doing anything to it so I would think
it would make great cob
. I'm trying to get things together for a rocket mass heater
and would like to know if anyone else has experience
with this type clay. It's very sticky, you almost can't get it off a shovel if it's wet....