A R C H I V E

Item 1374 of 2719

Vintage Lava ashtray, 60s - 70s made of chamotte clay

SKU: 2517

Vintage Lava ashtray, 60s - 70s made of chamotte clay

Beautiful large square vintage ashtray made of chamotte clay with an inside that is smoothly finished with a red glaze. This ashtray, which is made in the so-called lava style pottery, is in a good condition and is a great item for the retro living room.

Beautiful vintage item with minimal traces of use.

  • Height: 6 cm.
  • Length: 19.2 cm.
  • Width: 19.2 cm.

Grog, also known as firesand or chamotte, is a ceramic raw material. It has a high percentage of silica and alumina. It can be produced by firing selected fire clays to a high temperature before grinding and screening to specific particle sizes. It can also be produced from pitchers. The particle size distribution is generally coarser in size than the other raw materials used to prepare clay bodies. It tends to be porous and have low density.

Grog is used in pottery and sculpture to add a gritty, rustic texture called "tooth"; it also reduces shrinkage and aids even drying. This prevents defects such as cracking, crow feet patterning, and lamination. The coarse particles open the green clay body to allow gases to escape. It also adds structural strength to hand-built and thrown pottery during shaping although it can diminish fired strength.


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