I don't know the size and curvature of the area to be treated but I would maybe try just doing like the auto body guys do and sand down with some fine grit sandpaper, maybe treat with a corrosion inhibitor, degrease and then repaint. Seems like hand sanding would have less overhead in equipment; be less expensive; easier to get started and may give a little better "feel" for the job, versus a blasting booth ... I think with decent technique you can get a very nice finish just hand sanding and using spray paint.
Best, Sean On Mon, Sep 21, 2015 at 5:54 PM, Noel Chiappa <j...@mercury.lcs.mit.edu> wrote: > > From: Jay West > > > A couple items in my holdings have rust ... The only good solution I > > could see is having the existing metalwork sandblasted and then > > repainted. I've not checked, but I suspect that's "non-trivial-$". > > Thoughts? > > Iff you have access to an air compressor, small sandblast units can be had > at > Harbour Freight for less than $50. If you don't have a compressor... well, > that's considerably more money, but I find a compressor is a very useful > thing to have. > > I feed our sandblast unit (one of the HF ones) with playground sand, a > couple > of $ per bag, which I feed through a sieve made of 4 pieces of scrap wood > (frame) and some plastic door/window screen. (If you don't sieve it, the > cheapo play sand has larger bits in it which tend to jam the nozzle.) And > the > sieve allows me to be _really_ cheap and sweep up the sand and recycle it. > > I refinished an H960 which I got which was in pretty nasty condition (very > severe rust on the bottom surface, some rust elsewhere, e.g. on the > uprights) > using this rig, and some tins of spray paint (Rustoleum flat black), and it > came out looking brand spanking new. (My attempt to do the same with a BA11 > ran into some shoals, I screwed up the spray-painting - definitely an art! > :-) > > Anyway, if you're up for doing it yourself, it's a useful capability to > have > in-house. > > Noel >