The temperature inside our kiln looks like a small detail. It is not. Fifty degrees decides whether the basin you ship cracks in winter, stains in a year, or lasts a decade.
Vitreous china becomes truly waterproof somewhere between 1,220 °C and 1,260 °C. Below that range, micro-pores remain — invisible until water finds them. Above it, the body warps and the glaze runs.
We fire at 1,250 °C — the upper-middle of that window. Slightly hotter than industry-standard 1,220 °C, but with kiln-cycle data that proves the geometry holds.
The point of firing high is not the heat. It is the certainty.
At 1,200 °C the body is fired but not vitrified. Water absorption climbs from under 0.5% to around 2%. That is the difference between a 25-year basin and a 5-year one.
Cheaper. Faster. Not what we make.