Posts: 252
Threads: 16
Joined: Aug 2005
Hi Arne!
Yeah, as Albert says, toothpaste works fine as he suggested.
I use it sparingly on cotton wool to buff CDs and have done for 13 years, a few years before the CD repair "kits" came out.
If you can polish polycarbonate and perspex (and LEXAN) with
toothpaste, then i think "reverse polish" is ok to use on the calcs. I'd watch how wet you got the cotton wool,
though of course!
The key factor is the SIZE OF the PARTCLES in the paste.
Many years ago I built a 12" mirror (4 a reflecting telescope)
so I picked up info on the physics of polishing versus grinding.
In polishing, abrasive particles are fixed in a matrix which is dragged across the surface to be polished. In grinding the particles are free to roll around and do more "damage".
Cheers from Down Under,
Don W