Formulating a Porcelain continwed

No matter what type of porcelain you
make, give careful thought to how mature
it needs to be. If zero absorption is not
necessary to achieve high translucency,
consider reducing the feldspar to achieve
0-1.0% values. Such a body can sill be
considered functional anc vitreous ane it
will resist warping in the kiln associated
with firing past the point where porosity
reaches zero. In addition, material changes,
which result in more maturity, will be less
likely to cause trouble ina body that has
some ‘room to move.” Also, when you
evaluate fined absorption measure the prop-
erty ata vanety of temperatures, A ‘meas:
ure-only-al-ihe-working-tempermture’ phi-
lasophy is a tunnel vision approach that
will almost certainly get you into trouble,
especially in situations where the working
lemperature is farabowe the point at which
zero porosity 1s attained,

Excerpis from website http:
digitalfire.com and thanks to Tony Hansen.

TECHNO TIPS

Duncan Ceramic Products

Les Crimp of Arrowsmith Potters Guild in Parksville sent some information from the

Ounean's Ceramic Newsletter

New Packaging for CoverCoat Underglazes

Duncan's CoverCoats will be packaged in
2-o%, squeeze bottles instead of jars, the
same convenient bottle that the Concepts
are packaged. Duncan will ship new bot-
Hes when old jar stock is depleted; thus
CCW Lid. wall do the same.

New Colour Palette for CoverCoats

The CoverCoat line has undergone acom-
plete colour restoration to provide a new,
fresh balanced palette beginning this June.
Eight slow moving colours will be discon-
tinwed and cight new, HOT trendy colours
wall be in 2-02, squeeze and pints

New CoverCoat Colours:
CCIBE Lilac, CCI9D baby Blue, CC) BS
Tomato Red, CCIM Manne Blue, CCRT
Rustic Red, CCIE Violet, CC192 Dark
bluc, CC 193 Hunter Green

Discontinoed CoverCoats:

CCIO4 Princess Yellow, CCI1S5 Bamboo
Brown, CCI 16 Aztec Brown, CC 138 Wis-
teria, CCI4AT Delphinium Blue, OC155
Light Brown, CC169 Peaches n' Cream,
CCU Apricot Preserves.

Website Update
The new improved website, hinp:f/
ww duncanceramics.com, has over 100)
proyects including patterns and material
lists, specific catcgones for any type of
ceramics business from hobbyist to educa-
tor bo contemporary studio to manufac-
turer, newshetter and MORE!

Gerstley
Borate

PLAINSMAN infec

Box 1266, Medicine Hat, Alta. T1A 7M9
Phone 403-527-6535 FAX 527-7508
Intemet: httpc/waw. plainsmanclays.com

Learn all about it at www.gerstleyborate.com

Available now through:

Greenbarn Potters Supply Surrey, B.C. Phone: 604-888-3411
Vancouver Island Pottery Nanaimo, B.C. Phone: 250-716-9966
Warehouse Inc.

Plastic Borate