Charlie Cummings on tue 16 may 06
More cone 1-3+ glazes for your enjoyment.
One complaint I hear often is that earthenware doesn't have enough
phenomenon. The students in my recent glaze class tackled that
problem. These glazes are fresh and barely used. We are just
learning to use them.
CCCS Denim cone 1-3 (#06-110)
Tile #6 kaolin 23
epk kaolin 9
dolomite 17
flint 20
gerstley borate 30
titanium dioxide 3
cobalt carb 1
Sometimes shiny, sometimes matte. Put it over a cloth texture, and
you have invented ceramic denim. It reacts to the slip color under
it. It also breaks light brown over lines, brush strokes, or
throwing rings. This glaze uses dolomite. All of the books say it
isn't active at this range, but my students didn't know that. I
would have told them it wouldn't work, but I like to let them make
their own mistakes...or show me I'm so so wrong. Now I just need to
convince them to try other colorants. This glaze likes a big kiln
and a slow firing. The results from the small kiln were cool too,
but incredibly different.
CCCS 06-144 cone 1-3
Washed wood ash 5
whiting 9
Gerstley Borate 15
Redart 63
Zinc oxide 3
I swear this looks like an old matte stoneware glaze. It has a warm
iron yellow background with lots of rust spots. It goes mostly brown
where thin. Thicker spots have more yellow. I bet iron brushwork
would look nice over this glaze, but I haven't tried it. Just a theory.
jm2 (mkh 39) Macrocrystalline cone 1
frit 3110 43
zinc oxide 23
silica 16
lithium carb 9
laguna borate (gerstley) 9
Yep, it grows crystals. Nice ones if you give it time. I stopped
playing with it because every time I put it in the kiln my CCCS color
base (from my last post) would have problems. Specifically, the
chrome and the iron versions would blister. I think it may have
something to do with the large amount of zinc in the glaze...or I may
be superstitious.
CCCS lichen (CC5) cone 1-3 (probably a much wider firing range than that)
Synthetic bone ash 50
Frit 3134 50
Unlike magnesium based glazes, this glaze gives good color response
with cobalt, copper, iron and some commercial stains. All of the
cool kids add dish liquid to the glaze, whip it to a froth, and dip
pots in it. The bubbles dry out and leave their structure
behind. (Ok, so none of the cool kids did it. It was just me.)
More to come later.
Have a phenomenomenomenal day.
Charlie Cummings
Charlie Cummings Clay Studio
4130 South Clinton Street
Fort Wayne, IN 46806
Charlie@claylink.com
260-458-9160
www.claylink.com
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