Current Projects chat and miscellany

So, I got a cheap Rock Hopper Tig Team SL on Ebay a while back, and am hopefully going to build it up this weekend. The paint's really ratty, but nothing too major, apart from this. Is it worth spraying over with a rattlecan to prevent corrosion (just on this stay)?

The way aluminium works, is that a thin oxidised layer will form. (Whitish colour) this is hard & durable and protects from any further corrosion, as good a powder coat. Just stops right there.