hilpert at cs.ubc.ca
Tue Apr 21 12:21:24 CDT 2009
Peter Coghlan wrote:
> Brent Hilpert ã*ãã*¯æð¸ã**ã**ã*ã*:
> > If chemical treatment or polishing is inadequate, Scotchbrite pads with water
> > might be a next step. They can be surprisingly abrasive on soft metals (they
> > can remove thin plating or anodising), so one wants to be gentle at first, but
> > they are less aggressive than steel wool or wire-brushing. I haven't heard of
> > any issues with them leaving embedded particles, as has been mentioned as a
> > problem with steel wool.
> There are several different grades of Scotch Brite. The baby blue
> grade, which is the gentlest, might be preferable to the green, red,
> gray or other grades. That's all I remember of the grades but if you
> find a box of the stuff, the grades should be described on it. Perhaps
> the info is also on the 3M website somewhere?
( ? .. that thread was from months ago)
Yes, green is what I generally work with, gray is too coarse for the task.
I haven't used the red or blue, although it would be nice to try the blue
sometime, being finer.
More information about the cctech