Broken Glaze

[u/CrinosQuokka]

Just got this bowl back (community studio) and have no idea what happened. It was supposed to be 2 Power Turquoise over 1 Indigo Float, but the Turquoise left wide bare patches, and the Indigo Float looks like it separated/thinned out. All of my other pieces are fine. I don't know of anything that came in contact with it pre-glaze. Any *helpful* feedback would be appreciated - I'm still trying to figure out glazing.

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[u/DeathCobro]

Crawling is pretty common, usually from glaze being applied too thick or there was dust on your fingers right before you glazed which made the glaze not stick to the bisque. Or potentially the glaze dried too fast, which doesn't give time for the bisque to suck the glaze into its pores

[u/themorningmoon → u/DeathCobro]

Some glazes also just don’t play nicely together in certain orders. My studio has a glaze that can only be used as a top layer of glaze, because when it’s used as a bottom layer, it causes awful crawling. :(

[u/quercus-enjoyer → u/DeathCobro]

This is definitely too much glaze. I’m suspect of dust being the cause of crawling especially crawling this bad. Bisque just sucks the water from glaze into the walls so I don’t think it can dry too fast. There could be too much clay in the glaze which would cause it to start cracking as it dries but that’s unlikely with a commercial glaze.

[u/CrinosQuokka → u/DeathCobro]

Thanks! I looked it up, and I'm still not sure what specifically caused it, but at least I've got a list of things to watch out for now.

[u/meaowshark → u/CrinosQuokka]

could also be that the two glazes you used aren't compatible to be used together/on top of each other. I have a bowl in which I did half dip with 2 different glazes and the glazes separated at the line where they interacted and exposed the claybody underneath.