I fired another load that contained some raw glazed pots, and though the glaze effects were nice, I had some serious body issues. The pots were tumblers like the three shown above and mugs. All had the same Richard Bush Nutmeg glaze as above and an accent glaze of Varigated Slate Blue from Hesselberth. I poured the interiors and dipped the exteriors and poured the accent color around the outside of the rims. It didn't take long until I saw blisters appearing mainly where the pots had been wetted three times. I was able to press the blisters flat but the clay was delaminated and it got worse again in the firing.

As you can see, the blistering was pretty severe, and was present in all the pieces with this glaze combination. There was one blister in one of the mugs where only the Nutmeg glaze was located. It's really puzzling because the three tumblers from the previous firing were fine.

Comparison Tests from My Last Kilnload I wanted to try single firing some pieces using the same glazes and compare how they came out versus bisque glazed pots with the same glazes.

These tumblers were glazed the same with C. Harris Temoku (the recipe I have published on this network) with a splash of Light Stormy Blue from the Hesselberth and Roy book Mastering Cone 6 Glazes. Both are on Laguna #80 brown stoneware. One on the left was glazed raw when it was bone dry, the right one had been bisqued to Cone 05.

Two jugs were dipped from the bottom up the sides in C Harris temoku (left one about 2/3 of the way - right one 1/3 of the way. A grey green scrap glaze was sprayed above and lapping over the temoku a bit. On the right jug the scrap glaze was a band with Jens Juicy Fruit sprayed at the top and lapping down over the scrap glaze. THE RIGHT JUG WAS SINGLE FIRED.
The above pieces were all fired in the same load with slow heating up through 1400 degrees F, normal fast as possible rise to cone 5 1/2 tripping off the kiln sitter, half hour hold at 2102, 1 hr hold at 1706, natural cooling from there.