[renormalised (Carl)]

Originally Posted by Liz

I bought an alliminium case from Jaycar - a bit more expensive but easy to set up as had foam inset already (think about $80).
Alas, have only had it about 6 months and already going RUSTY Ah, the joy of living on the beach

Nah Liz...not rust....salty air and sea mist corroding the aluminium. Get some Brasso and rub it down with that. Whilst not technically for aluminium, it will clean it and keep it safe from corrosion nevertheless. Or, clean up the case and grab some clear lacquer/varnish and coat the case with that. That'll protect it.