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LUNA Speckled Stoneware

$30.00

Only 9 left

The vividness of the spots of LUNA clay is caused by natural minerals that may include traces of other minerals that can rehydrate after firing at a low temperature and cause flaking. To avoid it, it is recommended to fire the biscuit at a higher temperature (1050-1080ºC / Cone 04) and increase the soak time. If you work directly in single firing, the problem does not arise.

(*) Firing range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC/hr heating rate.

Comes in 27.5 lb. Bag

firing Details

Manufactures recommendation:
Δ Cone 5-7 1200-1260ºC
Biscuit temperature: Δ1060ºC / Cone 04

Shrinkage

Drying shrinkage: 5.8%
Firing shrinkage 1260ºC: 5.3%

Absorption / Other Details

Porosity (water absorption) at 1260ºC: 0.0%
Water content: 19%
Plasticity (IP Atterberg): 14
Carbonate content (CaCO3): 0%
Dry bending strength: 2.7 N/mm2
Fired bending strength 1260ºC: 29.2 N/mm2
Thermal coefficient 1250ºC (25-500ºC): 61.1x10^-7ºC^-

Shipping Details

Orders under 200 lbs. Shipped via UPS
Orders Over 200 lbs. Shipped via Freight
We cannot guarantee orders shipped in winter months will not freeze in transit. Shipments may be delayed, or subjected to cancellation due to bad weather in winter months. Late November - April