Ceramics Glaze Bubbles

Blisters are evident on the fired glaze surface as a moonscape of craters some with sharp edges and others rounded.

Ceramics glaze bubbles.

These craters are the remnants of bubbles that have burst during final approach to temperature or early stages of cooling. Efforts are made to create a dense laydown to reduce air pockets in dried glaze layer. Fritted glazes generate far fewer bubbles although they can still come from the clay portion of the recipe used for suspending the glaze slurry binders used for hardening and from colorants under the glazes. When the glaze is applied i see little air bubbles which i rub down.

I used a plate i made out of a medium fire clay that i bisque fired. Fire it in the glaze kiln and enjoy your new bubble patterned piece. In some cases there will be some unburst bubbles with a fragile dome than can be broken. The firing is cone 6 7 with a slow cooling down cycle.

Rutile blue tend to be quite sensitive to thick application and fast firing and cooling and bubbling problems with them seem out of place. The author hedy yang is a ceramic artist from novi michigan. Apr 21 2017 explore lsimmons s board bubble glaze on pinterest. The lines of glaze should be thin and smooth against the piece.

Apply the glaze in a thinner layer to minimize its ability to contain large bubbles. See more ideas about pottery techniques ceramic techniques glazes for pottery. In this video i demonstrate how to do the bubble glaze technique for ceramics. Pyrites sulphates some fluid glazes i e.

Use clays not containing large gas generating particles i e.