In message
,
Onetap writes
On Sep 20, 11:08 pm, Tim Lamb wrote:
Look up Silsoe incinerator. The agricultural college did some work
optimising the hole size and spacing. They used a raised mesh of some
sort to form a hearth.

http://adlib.everysite.co.uk/resourc...cineration.pdf
Tim Lamb

That's interesting, thanks for that.

The two rows of ventilation holes were to try to get it to act as a
gasifier, with a primary and secondary air supply. This burns much
more efficiently and cleanly than a simple fire for lots of reasons
that can be found on the internet.

I've given mine away. One point to watch; don't set one up under
overhanging or nearby trees.

regards

--
Tim Lamb