Q1. Sorry to be a pain, but I am going to make a Tandoor, and have read your Oildrum Blog with enthusiasm. I am assuming that you got your clay from Bath Pottery Supplies, but can you tell me which clay you decided on & why ?
I used raku clay. I was advised that it has excellent thermal shock characteristics and hardens at a moderately low temperature.
Q2. I felt that your liner should have been thicker (3 cm at least) but did it crack further ?
The tandoor has been extremely stable with no further signs of cracking. I
think the thickness of the clay was ok. If it is too thick the tandoor will take
longer to heat up
Q3. Hindsight is a wonderful thing, what changes, if any would you make if starting again ?
- The joints between the clay panels are crucial. This is where
most of the cracking came from. It is worth spending a bit of time
practicing making high quality joins
- I wouldn't put so much concrete in the base - it made the whole unit very
- Get a decent lid for it. With a lid it heats up much quicker and gives
better control of the heat