Making my own Pottery Glazes
These past few months I have really submerged myself in learning all about making my own pottery glazes. I have tried to learn how to make pottery glazes in the past by reading and an online class but my eyes just glazed over. This time around I really think I am beginning to get it. I guess it was all in life’s timing.
As I mentioned in my first post about this new endeavour I mentioned that I signed up for a class by Sue McCloud called “The Art of Glaze Chemistry”.
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What she did, and what I needed, was a push to experiment with making pottery glazes!
On my own I would never do it, but for a class I paid for I was certainly going to do what she suggested. After all, that is basically what I paid for!! That Push to experiment.
I wasn’t disappointed. In fact, I came up with a few nice pottery glazes that I can call my own.
Like this sweet vase. It was thrown on the potters wheel in a dark clay and then I slathered on some white slip and ran my fingers through it. I wanted to be able to glaze it where I could see the contrast between the white slip and the dark clay but I knew nothing on my glaze shelf would do that.
So it sat on my shelf for a bit!
When I saw the glaze test tile come out of the kiln with this lovely translucent green I knew I had found the glaze I needed for this vase.
I wasn’t disappointed!!!! The base glaze is now a keeper recipe and I will be experimenting around with other colors. Here is the recipe if you are interested.
Another experiment we did was test different colorants with different RO Fluxes which can change the color slightly. Below is one of the sets of test tiles. The RO Flux was Wollastonite and the colorants I used were copper Carbonate, cobalt Carbonate, Manganese and Chrome Oxide.
I got some really pretty glazes in that batch but look what happened when I used Zinc as the RO Flux
Total Mayhem with Cobalt and Manganese and the CHROME turned PINK!! Now that’s cool!
It did take me a bit to wrap my head around all the chemistry involved. Although I sure don’t have a 100% understanding I do “get it” more than I did in the past.
I know this looks weird on an article about glaze making but when I am experimenting with different glazes I don’t make more than 200 ML. These cups hold 12 ounces and they have a nice lid to keep the glaze from evapoating while you wait to see what comes out of the kiln!
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