Remove machining marks in brass?
How do I remove machining marks in brass, and go on to a mirror finish?
I have just completed a brass component, basically it looks like a Gent's ring, 40mm in dia, 6mm thick, with a large hole in the centre. It's not a ring, but a frame for a rare coin.
The finish on the OD was finely serated, left by the carbide tool. I figured a quick lick with 800 wet and dry would do the trick, but not so.
It now looks like it's been sanded, so, what else do I try?
Some thoughts are polish the OD with fine valve lapping paste, then finish up with Brasso. Or may be an automotive cutting compound?
This frame will be gold plated as the final finish. Perhaps I should just leave it the plater's to polish.
Any comments are welcome, the art of metal polishing is something I would like to know.
Regards,
Ken