Example of a logo done using a polymer plate

The buff stoneware mug is fired at cone 10R and celadon glazed. The recesses were colored with a tenmoku glaze (on bisque by painting it into the recesses and sponging away the high spots). An outer containment line on the plate prevented the outside line from smearing outward and it provided a definite profile for cut-out after stamping.

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Letterpress plates from BoxcarPress.com. Great for DIY stamping.

A variety of plastic letter-press printing plates.

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We find the 0.047 relief depth shown here is best (K152), especially when pigment is used to highlight the recesses. It can be valuable to put a border around the outside so edges do not smear outward when pressing. These flexible plates do not need to be stuck to a piece of wood, just lay them face down on the clay and use a wooden block to press them down. When the clay is stiff enough no parting agent is needed. The cost: In 2024 the minimum charge is $37.5 for 50 square inches. They have an highly streamlined checkout that accepts PDF and AI vector files. The cart might generate all four CMYK plates, remove the CMY ones and keep the K (black). The most common mistake is having too much detail or too small printing. Or, forgetting to make them reverse-reading. It is best to make your images using vector graphic software like Illustrator, Inkscape, CorelDraw, etc.

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Glossary	Celadon Glaze A type of stoneware glaze normally fired in a high temperature reduction atmosphere kiln. It is transparent and stained green or blue by the presence of iron oxide.
Recipes	G1947U - Cone 10 Glossy transparent glaze Reliable widely used glaze for cone 10 porcelains and whitewares. The original recipe was developed from a glaze used for porcelain insulators.

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