Sandblasted canti posts
[Cross-post from mechanics, since I know there are a lot of technically-savvy people here, and it's a tandem frame]
So, I took my frame to be powdercoated, and the powdercoaters sandblasted the cantilever brake posts while stripping the frame.
The brakes seem to fit and pivot OK, but the posts are definitely "stickier" to the touch than they were before. I'm wondering if I should do something to polish them back to a smoother finish, and if so, what? Any suggestions?