On 23/06/13 07:22, Howzit_China wrote:

Yes rotting is a big concern. The best I can do is give the wood a
couple of layers treatment. I am thinking of coating the base in tar
(don't know where I got that idea but sounds like a good one). Not sure
what else I can do.

Old sump oil is probably your best option. Kills rot, kills woodworm.
Diseasel oil is if anything, better.

--
Rusty Hinge