OK now that I have a few pieces it’s time to approach the stripping process. I accept that I’ll probably have to totally dismantle the units to do a proper job and I already know how hard that can be.
I’ve heard several suggestions as to how to strip the units back to the aluminium. They include sand blasting (but that dents the aluminium) media blasting (leaves the aluminium intact, but doesn’t remove rust) or some sort of chemical remover, for example Nitromorse.
The next thing will be what to do with it once the metal is exposed. I’m assuming it will start to oxidise again almost immediately, so either we need to duff it up in some way in preparation for painting, or polish it up and protect it somehow if we were to keep it nice and shiny aluminium. We know that’s possible because Source Antiques do it!
Anyway, I realise that a bit of Googling will reveal some of the answers which I will do, but I wanted to state the problem first and, of course, invite comment. So to some extent, over to you!