I am pretty sure I have a few aluminum machines in my horde. I know the FW is. I have assumed that my Rocketeer is also aluminum but I don't actually know that. Maybe the 319 also? Fortunately none of them have any corrosion issues. I've seen the 77's with the white corrosion/oxidization and avoided those...funny, I've also noticed them going up in price lately too, I just assumed that's because I finally decided I wanted one. LOL
Is aluminum "rust" harder to deal with than when iron/steel rusts? Or is it really all pretty much the same process?