My pottery creations on and off the wheel.

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Pottery under the tree

In between constantly fretting over and checking the welfare of the chooks, i did some underglazing, some small flowers, sunflowers i made last week  and the jewelled gecko pot.

I have found a new favourite shady summery spot for pottery under the little tree out the front, will show you tomorrow ūüôā

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When is a rumpot not a rumpot?


Sadly, it’s when the glaze¬†I used¬†didn’t fit the clay body and ended up with crazing, tiny little cracks all over the inside of the pot¬†and not safe for food ūüė¶


They will, however, ¬†make pretty plant pots, i think the¬†next ones i make will be in terracotta with the “other” clear glaze.


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Underglazing the grapes

Time to underglaze the grapes on the rumpots today.



One of them i will be doing at the bisque stage and one at bone dry, it will be interesting to see the differences with both methods, i usually find it easier to do at bone dry.

After this i will give them both a bisque fire to set the underglaze and fire the two new wheel thrown lids at the same time….in the kiln now.

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Testing glazes for the Rumpot

I have been a bit consumed by testing glazes to go on the rumpot the last couple of weeks, i wasn’t impressed with the matt ones i tried,¬†so did some more. It has been keeping me out of trouble for the most part…..more on that later!

I had to test for¬†a few¬†reasons, mostly because i normally work in terracotta so am starting with that lovely reddy brown already and trying to alter it or just bring its natural colour¬†out with a clear glaze and i am using a different clay this time for the pot which is well…white ūüôā

I discovered browns are tricky because they all have different undertones and brown is not just brown. ¬†The other main reason is that i am using a new clay and they all react differently with the chemicals and colourants¬†in a glaze, and of course i didn’t know how to make brown.

This time i used a foodsafe clear glaze base so i could keep the gloss, opacified it with different amounts of zirconium silicate, rutile, red iron oxide and a commercial brown stain. To fill up the kiln, I also did some other tests with cobalt, copper carbonate and stains for my flowers maybe and did 3 monarch butterflies.

I was aiming for something similar to the clear glazed terracotta planter i made in the background, i like the outcome of number 3 for the pot, it has slight yellow undertone that matches the planter.


Oh yes, the bit of trouble i did get into was rushing the clay, again, i tried to bisque fire the pot before it was totally dry and the knob popped off the lid. Just to be safe, i turned the replacement lid on the wheel this time, hoping it will dry more evenly.

We have had a colour change today¬†to a clear base, still with black grapes and green¬†leaves,¬†but its all good¬†¬†i now know how to make a good few browns that i like for the new clay,¬†now i can get back to the making, which we all know is my favourite part ūüôā

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Glaze test results


Testing the Janet De Boos glaze 29 again cone 03-02, this time i had a good bend at 02 in the middle of the kiln. So that’s the temperature right, and the fritt substitution was right according to supplier, but i’m not so sure…i imagined cream coffee was like a more opaque milky coffee?

Tested on the white stoneware, terracotta and the smooth white clay .  Curious that the red copper oxide seemed to just coat the water and not absorb so skipped that one.

Now i just have to work out what’s what and do tests using a clear gloss base for #1, #2 and #3, and add an extra 4% iron oxide to the Janet de boos glaze #8,and maybe a lighter red iron oxide wash over #8,¬†to see if i get¬†a brown¬†i like for the rumpots.



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Frit 3134 or Frit 4124?

Sometimes you put a glaze in the kiln and you don’t get what you think you are going to get, it depends on so many different things, time, temperature and clay type,¬†even where you put it in the kiln.¬† Usually i have a rough idea of what happened, but not this time.¬†

So, i tested this Janet De Boos glaze on white and terracotta earthenware to cone 02, Frit 3134 90, Bentonite¬† 20, Rutile flour 5, Red iron oxide 2. ¬†Being from an old book i wasn’t able to find frit 3134 anymore so substituted Frit 4124 and hoped i would still get the stable coffee/cream¬†medium-gloss glaze.

My thinking was that because they are both borosilicate frits, then read this  (Frit 3134 is similar to 3124 but without Al2O3) on digitalfire and this from Waikato Ceramics Borax Frit 4124  (Formula: Ferro 4124 (was 3124) that i would substitute frit 4124 for frit 3134, i thought i had it worked out, but nope i must have used the wrong one.

Even more confusing to me was the blue that popped up all over the other things in the kiln like these ones…maybe there was too much cobalt carbonate flying around the kiln?

I did get a fab result on my buddha head though!


I am determined to learn the answer, but for now it is a conundrum, if you have any ideas for me i would love to see your comment!

Dec 6th…did i use a clear frit instead of an opaque one? Is there such a thing? Can i opacify it now or just start again?

Dec 7th…before i change anything else, i decided i will have to be patient and just do another lot of tests “without over firing” the glaze this time…it could be that simple, you never know. As for the blue thats still a mystery for now.

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Throwing off the hump

To test a new glaze and some old glazes on the new clay i needed some test tiles.  Normally i do flat ones with a texture on them but they are a bit, one dimensional and i find it hard to imagine how it will look on a real pot.

So here are some mini, wonky pots thrown off the hump with Rumpot number 2 that i just had to make for myself ūüôā


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Glazing Fun



Checking the glaze thickness before I start out.


Here is one of the large chooks going through its transformation.

Glazing the wheel thrown bowls, pierced pedestal bowl and hand formed plates.