VOLTAGE DIP

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As my kiln is very big, I bought a tiny kiln like this for glaze tests. It’s even useful for small items, for example, when I had a commission for a bowl from St Albans Cathedral and didn’t want to wait till the big kiln was full.

I’ve been working furiously for shows over the summer, making use of both kilns, and the other day the little kiln mysteriously turned itself off in the middle of a firing and the big kiln went slow.

James Otter of Potclays, who made the small kiln, suggested numerous possible reasons for the failure, but none seemed to apply. Then, prompted by the fact that both kilns failed at once, he suggested voltage dip, a temporary reduction in the power supply. I’d never heard of voltage dip before and it’s not something that troubles the domestic consumer much, but firing the little kiln again and finding that everything was back to normal suggested that it was indeed the reason for its stalling in the first place, perhaps precipitated by heavy consumption during the heatwave

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