Vapour Glazing

Cathi Jefferson anended the vabour glazing
session at NCECA 97 m Las Vegas

Traditionally , we have all believed thar a
Salt kiln is bad for the environment. We
have understood that salt - NaCl - once pur
into the kiln chemically changes, with the
sodium adhering co the clay surfaces (and
every other surface in the kiln) and the
chlorine is left to go up che chimney and
into the air as toxic chlorine gas, No one
has ever had conclusive proof thar chis
really happens, we have all just come to
accept this ag fact.

Fortunately, Wil Shynkaruk and .Ruch Ann
Tudball have had the wisdom te invesnigare
this long held belief with accurate testing
and research methods. ‘What they
discovered was -[T'S NOT TRUE - and
they have che dara to prove it. They have
determined that less than 2% of che salt pur
ince the kiln actually chemically changes ar
all. More than 98% leaves the chimney as
intact NaCl. Repeated samplings in
different kilns verified that no chlorine gas
Was

Cathi Jefferson

slides of her work at Malaspina College,

detected leaving the chimney.
Furthermore, soda may be more harmful
due to the chemical changes cecurring in
the kiln.

Higher temperatures are more efficient
than mid-range firings and ir is also a
waste to put salt into the kiln before
reaching temperature. What was detected
wai carbon monoxide, This occurs with
arty fossil fuel burning kiln, car or gas-
surding machine and definitely warrants
our best efforts to build and fire our kilns
as efficiency as possible.

This is wonderful. Once they publish
their findings we shall benefit from their
efforts. [ct is a relief to know that a salt
kiln is no more harmful to the
environment than other fossil-fuel burning

kiln.

Mark Your Summer Calender For
Saturday August 16th @ 7 p.m
Linda Christianson will be showing

Nanaimo, BC.
$5 drop-in to support the Tozan Kiln

Page 5

CABC’s 25th Anniversary

The members of the Potters Guild of B.C.
extend our congratulations to the Crafts
Association of B.C. for 25 years of services
responding to the changing needs of B.C.'s
craftspersons,

The various oppormurities that the CABC
offer to their membership encourage a
strong sense of community and
connection for craftspersons throughout
the province. Benefits include a bi-
monthly newsletter, a Mastercard
merchant discount, artist referrals and
insurance benefits

The 23ch Annivessary exhibition takes
place at the Canadian Craft Museum
during June and July of 1998. A lecture
series during the same period as well ag a
studio map of artisans of BoC. are some of
the projects supported by the CABC.

For more information about the Crafts
Association of guidelines relaced to
exhibiting in Crafthouse, scholarships ar
other programs, call the CABC at (604)
687 - 6511,

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