Pin Holing In Ceramics

The problem emerges from the kiln and can occur erratically in production.

Pin holing in ceramics.

Slow firing at peak temperature helps heal pinholes but preventing them in the first place is the holy grail of a smooth glaze. Pits are smaller they mar the surface but to not penetrate all the way down. It is an occurrence of small holes which provide a path of exposure to the substrate from improper spray atomization or segregation of the resin from the pigment in the coating. A pinhole marring a fired glaze is possibly the most troublesome of all glaze faults disrupting an otherwise smooth surface.

Pinholes refer to the small holes usually found on the pottery surface after glaze firing that most of the time penetrates down through the body. Kai ceramics 390 416 views. These holes normally go down to the body surface below. Kiln opening pottery glazing 4 dipped handglazed ceramic cups.

I have summarized the many experiments i did with dozens of potters who have had this problem over the years. Ceramics glaze flaws glazes pinholes pottery. This is a 34 page pdf outlining my experience with the problem of pinholing in glazes. A glaze defect where tiny holes are present in the fired glaze surface.

Pin holing are tiny holes in the finish caused by surface porosity or other imperfections in the substrate. Brushing glazes with the clay lady duration. Pinholes or pits are often no larger than the head of a pin. Pinholing is a common surface defect that occurs with ceramic glazes.

I divided the solution into pinholes caused by.