>I have polished aluminium motorcycle crankcases etc. by bead blasting with
>small glass beads to clean and prepare the surface then lots of hard work
>rubbing the aluminium with fine steel wool and light oil. Just keep rubbing
>until you get the finish required. We use the term for the hard hand work
>(out here) as "using plenty of elbow grease"!
>
>Best regards, Fred Birkbeck
I've found that on some material, even glass beads can be fairly agressive.
For those materials try blasting with ground walnut shell - it should be
available from the some place that supplies your glass beads,
Cheers
Scott Barrie
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