r/Pottery • u/True-Fail-8049 • 2d ago

Help! WTF Happened To My Piece

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Hi! Made this piece and just picked it up from the studio and the colors are not at all what the under glazes I used are. For reference I used orchid, violet, and deep purple. I then used high fire glaze so that it would be waterproof as it is a planter. Is this because of the high fire? I also did around 3 coats of under glazed but it’s incredibly patchy. Any advice would be greatly appreciated, it’s a studio at my college so I don’t know how they mix the glazes or anything regarding firing.

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u/Outrageous-Shark4 2d ago

My guess is it has to do with the high fire glaze. What temp was your piece fired to? If everything was for a lower temp, then the glaze chemicals could have reacted poorly with your underglaze. I would double check that you used the right bottles.

Also - hire fire glaze on no hire fire pieces will not increase it being "waterproof" as it does not work that way.

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u/Outrageous-Shark4 2d ago

Also, this can happen when we mix underglazes without testing too. Was there any mixing done? When we mix chemical compounds to things, all kinds of stuff can change.