Frits
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Calcium Borate Frit
A fritted substitute for colemanite (new formulation).
% ANALYSIS
CaO = 27.10
Al2O3 = 4.77
SiO2 = 17.68
B2O3 = 50.44
Firing Range 1030°C - 1180°C
from £24.91 inc VAT
Ferro Frit F3134
Manufactured by Ferro, this frit is intended for use as a lime and borate source in partially fritted glazes, lead bisilicate glazes and low cost hobby glazes cone 06-10.
Melting range approx. 790-870C.
from £13.56 inc VAT
High Alkaline Frit
The High Alkali frit will give beautiful crackle blues from copper oxide addition.
% ANALYSIS
K2O = 17.35
Na2O = 17.46
Al2O3 = 5.69
CaO = 5.32
SiO2 = 50.30
B2O3 = 3.88
Firing Range - 860°C - 1060°C
from £13.80 inc VAT
High Boron-Lime Ferro Frit F3124
% ANALYSIS
K2O = 0.68
Na2O = 6.46
CaO = 13.97
Al2O3 = 9.96
SiO2 = 55.11
B2O3 = 13.82
Firing Range 1000°C - 1150°C
from £13.39 inc VAT
High Soda Frit F3110
High Soda Frit F3110
A very low alumina frit which assists spectacular crystal growth in glazes. Featured in many American recipes.
Leadless.
Firing range 1000-1100C
from £15.07 inc VAT
Lead Bisilicate
Lead Bisilicate is a 'true' Lead Bisilicate in that it contains 65-66% Lead Oxide, 32% Silica and 2% Alumina which acts as a stabiliser. This formulation allows for two molecules of silica to bond with 1 molecule of lead forming a Lead Bisilicate.
Lead bisilicate is the frit generally used in low solubility glazes and standard borax frit for leadless glazes.
Low Sol.
from £13.34 inc VAT
Lead Sesquisilicate
Often chosen for artisitic glazes where food safety is not required, this low solubility frit has a ratio of 1 part lead to 1.5 parts silica.
from £25.44 inc VAT
Low Expansion Frit
Low Expansion Frit
Immense craze resistance and useful additive to glazes which craze. Milkiness in large amounts.
Leadless.
% ANALYSIS
Li2O = 0.10
CaO = 3.60
ZnO = 3.30
MgO = 2.40
Al2O3 = 8.20
SiO2 = 63.60
B2O3 = 17.80
Firing range 1020°C - 1150°C
from £14.74 inc VAT
Soft Borax Frit
Slightly alkaline and gives turquoise from copper addition.
Firing Range 900°C - 1050°C
Si-Ca-Na-B-K.
from £15.27 inc VAT
Standard Alkaline Frit
Supplied in powdered form.
A highly alkaline frit used as a basis for raku glazes. Produces intense alkaline colours when used with oxides which have a crazed appearance.
Firing Range 860-1060C
from £13.80 inc VAT
Standard Borax Frit
Supplied in powder form
The unleaded frit most commonly used in earthenware glazes.
STANDARD BORAX FRIT % ANALYSIS
K2O = 1.33
Na2O = 8.75
CaO = 15.22
MgO = 0.05
Al2O3 = 7.54
SiO2 = 48.34
B2O3 = 18.76
Firing Range 900°C - 1050°C
from £13.51 inc VAT