Ceramics Glaze Bubbles

If the dried bubbles leave behind thick crumbs of glaze you ve applied too much.

Ceramics glaze bubbles.

Apr 21 2017 explore lsimmons s board bubble glaze on pinterest. In some cases there will be some unburst bubbles with a fragile dome than can be broken. Blisters are evident on the fired glaze surface as a moonscape of craters some with sharp edges and others rounded. 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. Apply the glaze in a thinner layer to minimize its ability to contain large bubbles. Pyrites sulphates some fluid glazes i e. Rutile blue tend to be quite sensitive to thick application and fast firing and cooling and bubbling problems with them seem out of place.

These craters are the remnants of bubbles that have burst during final approach to temperature or early stages of cooling. 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. Use clays not containing large gas generating particles i e.

In this video i demonstrate how to do the bubble glaze technique for ceramics. When the glaze is applied i see little air bubbles which i rub down. See more ideas about pottery techniques ceramic techniques glazes for pottery. The firing is cone 6 7 with a slow cooling down cycle.

The lines of glaze should be thin and smooth against the piece.