In article , Martin Sykes
writes
I've just got my new free compost bin from the local council and noticed
it's got a couple of what appear to be air holes in the side. I had been
thinking about making a similar modification to my two Sankey compost bins
which are pretty much air-tight.

Is it worth doing or will it cause problems? If it is worth doing, how many
holes would be best?

It makes sense to turn your compost - to get air to it. So it makes
sense to put holes in your bin.
Make the holes at regular intervals, in a spiral, down the bin, one on
either side. You can then shove a rod through each pair to create air
passages through the whole heap. If you make the holes larger than the
rods, you can also wiggle the rods to give a bit of a mixing action to
the compost
--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason, put ransoms
at jandg dot demon dot co dot uk where you see