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 <jnc at 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