Vest Keramiek Gouda - van Woerden aardewerk - verzameling-vaas kruik herkennen model en glazuur

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Vest Keramiek / van Woerden - red, black and white baking clay

red, black and white baking clay

Pay attention. In this section about clay a distinction is made between the periods Monster, Raam and Vest.

The van Woerden brothers used red, black and white baking clay. On the right are three bottoms of vases with the same model (F40) from different periods.
Click on the photo for a complete picture of model and bottom.

The left two are the oldest.
In Monster and in the early days in Gouda (Raam) vases were turned. Red baking clay was used. Making vases on a turntable took a lot of time. Much more could be produced by casting a model.

First a model was made by hand. The model was made into a mold that consisted of two halves. Clay was casted into the mold. All vases from the same mold were therefore identical in shape. After drying the edge of the bottom usually angle-cut. After applying glaze, the vase could go into the oven.

After some time, black baking casting clay was also used in combination with certain glazes. However, the black clay was not good for the high temperatures required for the glazes. That is why they switched to red baking clay.

On the photo below the vase is made of black baking casting clay. The glaze shows that it is a vase from the early days in Gouda. You can see by the seam in the middle that it is a casted vase.

From 1968 white clay from Germany was used. The white clay vases are therefore the most common. On the photo above, the right vase is the oldest.

white clay mixed with grains of crushed iron ore

In the early 80 white clay was used that was mixed with grains of ground iron ore (trade name: Portafer).

This clay was fired under reduction (little oxygen).

After baking, the clay looks brownish with dark dots.