polyurethane to keep metal from turning black?

I use these charms that people like that are rather cheaply made
metal. I would like to know if there is a way to keep them from
'turning black.' Someone told me to spray them with a light coat of
polyurethane.

Will spraying with a light coat of polyurethane work?

If so, can I spray it will a light coat of silver shine first as well?

Thanks.

I'd be concerned about build-up of spray and losing detail, but I also
that I would try it.

THEN...let us know what happens!

On May 14, 8:56 am, LaurieB wrote:
I'd be concerned about build-up of spray and losing detail, but I also
that I would try it.

THEN...let us know what happens!

Thank you. I just found out that the charms are silver plated - the
company just upgraded them so I'm not going to worry about it.....


Now what the heck is nickel free, rhodium plated? One company is
telling me that it is less likely to turn than silver plated. and that
it has a more platinum look? Anyone know?

Thanks.

meteor

On May 14, 10:04 pm, wrote:
On May 14, 8:56 am, LaurieB wrote:

I'd be concerned about build-up of spray and losing detail, but I also
that I would try it.

THEN...let us know what happens!

Thank you. I just found out that the charms are silver plated - the
company just upgraded them so I'm not going to worry about it.....

Now what the heck is nickel free, rhodium plated? One company is
telling me that it is less likely to turn than silver plated. and that
it has a more platinum look? Anyone know?

Nickel is something quite a few people are allergic to (my mother is
one of
them), so it's of some importance to make sure that the plating is
nickel free
as well. If you go for un-plated pewter you may be better off than
with
silver plated pewter as allergies go.

Not sure this helps ...

Maren
HiloBeads: Beads - Beading Supplies - Hand-made Jewelry
http://www.hilobeads.com/
Blog at: http://hilobeads.blogspot.com/

You'd get a very good answer from Peter in the rec.crafts.jewelry newsgroup...

He can tell you exactly what Rhodium is, why its used, etc.... but all in all, having a rhodium
plated silver piece means that the piece WONT tarnish. Rhodium is extremely corrosive resistant and
unreactive, so it does not tarnish like silver.

Sterling


wrote in message
...
On May 14, 8:56 am, LaurieB wrote:
I'd be concerned about build-up of spray and losing detail, but I also
that I would try it.

THEN...let us know what happens!

Thank you. I just found out that the charms are silver plated - the
company just upgraded them so I'm not going to worry about it.....


Now what the heck is nickel free, rhodium plated? One company is
telling me that it is less likely to turn than silver plated. and that
it has a more platinum look? Anyone know?

Thanks.

meteor