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Glaze Crawling Problem

Started this discussion. Last reply by RS Jan 7, 2020. 7 Replies

Any idea why the glaze is moving like this?I mixed a large quantity of this glaze early year and I have been using it since. In the past Ididn't have a problem with this batch or previous batches The…Continue

 

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RS replied to RS's discussion Glaze Crawling Problem
"Donna In the past I have tried wetting the pots like you mentioned, to humid around for it to work well here but thanks for the thought. I decided to experiment with a different base, while the resulting glaze is really nice it wasn't what I…"
Jan 7, 2020
Donna Kat replied to RS's discussion Glaze Crawling Problem
"Sorry, also for a recipe like this I made up a second batch with the entire EPK calcined and then mixed the two but I would not do that unless you were having more serious problems (you said only two small pots). You could though for instance just…"
Dec 28, 2019
Donna Kat replied to RS's discussion Glaze Crawling Problem
"Wiping with a sponge can cause crawling if the sponge has picked up any dirt/clay, If you are in a dry area (not humid but arid) you can quickly rinse the pot under running water but your glazing technique has to adapt to this. An air gun is better…"
Dec 28, 2019
RS replied to RS's discussion Glaze Crawling Problem
"Thanks Norm I'll give those suggestions a try. BTW, sorry it took so long to return and view this message."
Nov 14, 2019
Norm Stuart replied to RS's discussion Glaze Crawling Problem
"Olive Green Celadon shares many features of your glaze - a runny glaze with too much magnesium. I think the solution is to replace half the magnesium with calcium. 1.) Many of the ingredients of the glaze (3134, Talc and…"
Nov 5, 2019
RS replied to RS's discussion Glaze Crawling Problem
"I'm seasonably sure its not skin oils or resist, and I do wipe the pots with a damp sponge before dipping the pot into glaze. Glaze Base Ferro Frit 3134............. 29.000 Silica...................... 26.000 EP Kaolin...................…"
Oct 29, 2019
George Lewter replied to RS's discussion Glaze Crawling Problem
"Your oxide formula doesn't tell us about your raw materials. Glazes with high clay content shrink and crack and are somewhat de-adhered while drying. Then at temperature if the melting glaze has a high surface tension, it tries to ball together…"
Oct 28, 2019
RS posted a discussion

Glaze Crawling Problem

Any idea why the glaze is moving like this?I mixed a large quantity of this glaze early year and I have been using it since. In the past Ididn't have a problem with this batch or previous batches The only difference I can think of is when I used my sitter kiln I couldn't slow down the cooling as well as I can with my controller kiln. About an 1-1/2 to 2 hours longer on the laterOne confusing aspect is with the last firing only two very small pots of 20 pots (various sizes) with this glaze were…See More
Oct 26, 2019

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