This kiln is still a work in progress. Here you find the original, working kiln:
/how-to-build-a-kiln-for-pottery/
This kiln is not a beauty, but when the testing is over, I will make it bigger and more permanent. The kiln already shows some design flaws, but I do believe it has easy workarounds. The biggest mistake is using an underdimensioned pipe; the draft is even and steady, but it draws air into the fire too slowly, this way it never reaches high enough temperatures. Luckily, a small, cheap electrical fan seems to be enough to give the flames superpower.
A steady start.
I have a lot of old, water-drenched, crappy logs around in my forest. I hoped I could use them in the first few hours of the fire syclus, and then start adding better and more dry wood. But no; the frozen, water-logged wood was impossible to use. They just wouldn’t start burning, and reduced the heat instead of adding to it.
A cheap plastic battery-fan and a bent exhaust pipe make all the difference. Now it burns lively and with an improved draft. A wider pipe would probebly do the same. I will try that later.
