EARTHENWARE CLAY

Body 441 is a light to cream-coloured firing earthenware body with 45 % chamotte 0.2 – 0.8 mm. The recommended firing range is 1000 °C – 1180 °C.
This body is particularly suitable for the fabrication of large-sized pieces because of the proportion of low-dust special chamotte. Body 441 is the preferred choice for Raku-firing because of its high thermal shock resistance.

Apache’s micaceous clay. The recipe of that clay comes from the Apache descent, Felipe Ortega, placed in New Mexico, and it reproduce the old tradition of micaceous clay pottery over 400 years ago. The body is composed by white mica and low coefficient red clays. Mica confers elasticity and makes pottery immediately identifiable. Its original Apache character is achieved after wood firing. Available in extruded body (moist form). 

Firing range: 920-1000ºC
Water content: 24%
Plasticity (IP Atterberg): 23
Carbonate content (CaCO3): 0.8%
Drying shrinkage: 4.5%
Firing shrinkage 950ºC: -0.3%
Porosity (water absorption) at 950ºC: 15.8%
Dry bending strength: 5.9 N/mm2
Fired bending strength 950ºC: 18.4 N/mm2
Thermal coefficient 1000ºC (25-500ºC): 60.2x10^-7ºC^-1 

Blue self-enameling Egyptian clay - TEGYPB

Very siliceous clay intended more for modeling than throwing.

Clay mixture with incorporated enamel.

A single firing because self-enamelling: when drying, the sodium is in soluble form and migrates to the surface (especially do not scratch the layer or skin on the surface). During firing, the surface will melt more than the interior, resulting in the formation of a blue enamel.

Clay for decorative use. In no case for food use.

Single firing

T° Firing / 900 - 930°C electric oven / not higher to have the blue color.

If you fire at high temperature, it will begin to metallic with dark reflections and then turn black. Enamel may even disappear.

At 920°C, if your oven is reduced (gas oven), it will become very black.

No particular temperature curve, apply the same curve as for earthenware, respecting well the indicated final temperature.

Technical characteristics /

Drying shrinkage / 4%

Withdrawal at 930°C / (1706°F) 6.5%

Casting and uniaxial pressing

Good plasticity. Suitable for traditional pottery

FIRING TEMPERATURE RANGE : 1020 -1060ºC

Ferruginous ceramic paste from Catalan quarries.

Intended for artistic and decorative ceramics, tableware or garden ceramics.

Red ceramic paste without chamotte. Very versatile and ideal for throwing, calibrating and moulding.

Available in different hardnesses depending on the technique used.

Excellent behavoir with glazes, engobes and while drying.

Suitable for both single and double firing. Red with oxidative firing.

Reduction gives excellent results, for example with metallic glimmers. 

Firing temperature: 980-1050 ºC.