[Clayart] Chinese "raku"

robert hackert ndiaman at hotmail.com
Thu Jul 4 09:00:34 EDT 2019


Hi Robert:
Pretty much what we saw in the first video. The kiln appears to be electric, but doing reduction, so heavy duty elements. Oxy probe, and pyrometer, so no hit and miss.
It did look to be an iron glaze.
Great video. Course they had 800 yrs., or more jump on everyone else.

Rob Hackert

Sent from my iPhone

> On Jul 4, 2019, at 6:56 AM, Robert Harris <robertgharris at gmail.com> wrote:
> 
> I have to admit, I thought the water was coloured because it had absorbed
> stuff from the glaze (i.e. not stable very stable or so high in iron that
> the oxide was coming off into the water) vs being that colour originally.
> 
> I also thought that the point might be to "fix" the oil spots before they
> re-oxidised, or something similar.
> 
> On the topic of oil spots, I found this pretty interesting video a while
> back, might be worth sharing too.
> 
> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DN6Knf7H_FwY&data=02%7C01%7C%7C5cadc5e14fa84cb065cc08d7006e3fb0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636978345817797821&sdata=ZfGGogXIHrBXvsbfewcGT0h9hn9uQH5srSh%2BM%2BP1MT0%3D&reserved=0
> 
> 
> 
> 
> 
>> On Wed, 3 Jul 2019 at 17:39, Douglas Fur <23drb50 at gmail.com> wrote:
>> 
>> Some of the water used in this process appears colored. I wonder if they
>> are using soluable metal salts to effect the glaze surface like fuming.
>> Some have posited that the water is for reduction. Maybe its both the water
>> reducing the salts so that the result is a metallic luster.
>> Looks flash but I wonder how stable this surface would be. Would it survive
>> a dishwasher, hand washing or hot acidic tea served in it?
>> Duff
>> Seola Creek
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