|Cup with orange matt glaze, fired to cone 8|
I have a feeling I may have added a little extra water to the glaze slop, thinking it would evaporate before I next used it, since the bucket lid isn't airtight. I'd also mixed in some CMC to help with glaze suspension ( carboxymethylcellulose is a kind of organic glue ) and this appears to have rotted as it now stinks dreadfully, like no glaze I've ever experienced! Smells just like a stagnant pond! I've since learned that a side effect of CMC is that glaze dries alot slower, which I assume means that more glaze pours off the pot after you dip it. Normally, the first layer of a glaze will dry almost instantly on the bisqued surface. I think in future I will stick to bentonite for glaze suspension, not least because it doesn't go off.
Here are some of the test pieces I put in as well:
|Test pieces, fired to cone 8 in oxidation|
The lidded pot below was simply coated with two layers of black slip-glaze and it came out perfect, but another small vase blistered in several places. Based on previous firings, I had hoped that this black slip-glaze was very reliable, but it appears that more than one coat and there is a chance of peeling. It might be worth making it with a little flux added to see if it makes any difference to adhesion.
|Lidded vessel approx. 3 inches tall. Fired in oxidation.|
Never give up, the best is yet to come!