On Sat, 10 Dec 2011 18:39:40 -0600, Ignoramus20184
wrote:

I have a couple of those

http://igor.chudov.com/misc/ebay/tmp/J-G-Porter/133.JPG

They have white concrete on them, some solidly stuck. How can I remove
it safely to restore the good looks. Thanks

You cant. Name of the game.

Bead blasting will clean up the mental..but etch the plastic. Soda
blasting might clean the plastic..but wont touch the metal

Unless there is a process Im not aware of. Now...have you tried a
pressure washer? That may simply be caked on concrete Dust rather than
dried concrete thats set on the saw.

Gunner

One could not be a successful Leftwinger without realizing that,
in contrast to the popular conception supported by newspapers
and mothers of Leftwingers, a goodly number of Leftwingers are
not only narrow-minded and dull, but also just stupid.
Gunner Asch