Potter’s Crack
Potter’s
crack is not anything like Plumber’s crack. It is more like a Junkie’s crack.
Very addictive and makes you feel really high when you get a good batch. I’ve
been messing with this crack under shino now for probably 2 months. I’ve had so
many lows and very few highs. I think I now have figured it out. Why did I just
say that?
The copper
red you see is the result of wood ash interacting with the coloured shino I rub
into the cracks. I sprinkle the wood ash on with a kitchen screen while the glaze is still wet. I mixed 2% copper into my shino recipe. I also did a blue
shino with 1% cobalt oxide.
This is a
new frontier for me so results weren’t as instant as I would have liked. I
ended up bisqueing the crack to Cone 02. This actually fluxed the surface but
it did open the cracks up so that I could rub the coloured shino into the
cracks.
This has
not been the best of weeks for me with my kiln sitting idle for the better part
of a month . This is the second time in a year the damper motor went south on
my computerized Geil kiln. I just ltoday sent the motor back south to
California. I am very fortunate I have a smart young electrician helping me
through all the high tech stuff. Technology is wonderful when it works. When it
doesn’t it is very stressful.
My crack
tests were fired in my cousin Brenda’s gas kiln. Nice burners that you just
light a match and you’re good to go. Mind you, you have to move the damper all
by yourself.
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