I'm thinking that if I polish, then sandblast the piece, with say a
50 micron grit, that might do it. Any suggestions?
Most sandblasting grits will leave you with a dull matte surface,
not so lustrous. Glass beads might be better, as these leave a
But I'd suggest, instead, a brass brush. get one of the very fine
bristle "platers" brushes, and use it on the polished surface with
some soapy water. Scrub in all direct lions. It will take off the
high polish, and leave you with a finely patinaed scratch brush
finish. Much higher sheen than any actual satiin finish, yet not
quite high polish either. If you do a lot of this, set up a wet
buffing wheel with pulleys to give you a very slow speed, like 300
rpm. You can do this with some lapidary machines if you change the
pulleys. Then you can use the rotary brass or nickel silver scratch
brushes. Same very fine bristles, and be sure to use them wet, with
soapy water, or the traditional lubricant, stale beer... (Really.
Not sure it's any better, but it IS the traditional lube for a
scratch brush) Nickel silver brushes are better for white metals,
while the brass are better for yellow, since the brushes can tend to
color the metal a little.
Other finishes to consider are a matching color electroplate. The
plating can slightly dull down the high polish, and then you bring it
mostly back up with some baking soda on a finger tip or soft brush.
Looks very nice.
So does a bombed finish. The downside is that this one takes some
proper equipment/knowledge to do safely, as it's using cyanide in a
manner not suited to beginners...
Hope that helps.