Hannah Brehmer on wed 20 nov 02
Some people thought the color from ferric chloride would burn off if I =
refired it. Not so! I got one of the most stunning pots of my life =
when I took the burnt orange/yellow pot and put slip resist over it. =
When I peeled that crackled slip away, there was the most beautiful, =
glowing terra sigged surface, covered with an amazing pattern of =
crackles. (To those who haven't done slip-resist, it's fired in a =
raku kiln until it's like a crackled eggshell, then peeled away to =
discover the smoked pattern......check the archives) A word of =
caution - I emailed Charlie Riggs about it and he said that Linda had =
breathed in some fumes of ferric chloride and burned her throat and =
lungs! Do the fuming outside, wearing a mask. (Linda, I'm so =
sorry.)
Best wishes and love to all,
Hannah Brehmer
South Lake Tahoe
Marta Matray Gloviczki on wed 20 nov 02
hannah,
if you`d put up a picture or two
we would like to see that pot,
please!
marta
>Some people thought the color from ferric chloride would burn off if I
refired it. Not so! I got one of the most stunning pots of my life
when I took the burnt orange/yellow pot and put slip resist over it.
When I peeled that crackled slip away, there was the most beautiful,
glowing terra sigged surface, covered with an amazing pattern of
crackles. (To those who haven't done slip-resist, it's fired in a raku
kiln until it's like a crackled eggshell, then peeled away to discover the
smoked pattern......check the archives) A word of caution - I emailed
Charlie Riggs about it and he said that Linda had breathed in some fumes
of ferric chloride and burned her throat and lungs! Do the fuming
outside, wearing a mask. (Linda, I'm so sorry.)
>
>Best wishes and love to all,
>Hannah Brehmer
>South Lake Tahoe
Charles and Linda Riggs on wed 20 nov 02
Hannah Brehmer wrote:
> A word of caution - I emailed Charlie Riggs about it and he said that Linda had > breathed in some fumes of ferric chloride and burned her throat and lungs! Do the > fuming outside, wearing a mask.
> ceramics.org/clayart/
Don't I feel foolish.
I REALLY did think I could hold my breath when the foil saggar that
surrounded the pot was opened. My plan was to tear off the foil, then
run away from the firing area and let the wind carry the fumes away
while the pot cooled.
What I didn't count on was the prevailing winds following me around the
yard and seeping into the studio itself. Then later, when I refired the
pot to burn off some unwanted carbon without the foil saggar, the fumes
built up in a corner of the raku porch. One breath of that
and.....well....I just talk funny now.
Another thing about ferric chloride....the vapors can get you while you
paint it on a pot even if the work area is well ventilated...especially
if it's a rather large pot like I was working on. The more surface area
being painted---the more fumes drifting oh so silently down your wind
pipe and into your lungs.
And don't even get me started on the spraying of a diluted ferric
chloride solution on a hot raku pot...you not only need the right mask
but also protective eye wear.
Yep, those prevailing winds were blowing it right back in my
face....even if I was holding my breath inside the silica mask. Thank
goodness I DID have on protective goggles during that particular
episode.
Other than all that, the pots turned out rather breath-taking. :-)
Linda
Here's a website I wished I'd read before using ferric chloride without
the proper safety equipment.
http://ull.chemistry.uakron.edu/erd/chemicals/7/6518.html
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