Cleaning "Ivoryite"

[Les Smith]

>
> I have tried just about all the suggested methods of cleaning real
> ivories but none of these gets the dirt out of the "ivoryite" that
> Yamaha uses on some of their grands. This is quite porous material
> and the dirt  penetrates beyond the action of any cleaner I've used.
>  Any suggestions.
>
> Allan Day.
>

Naptha and 0000 steel wool.

Les Smith
lessmith@buffnet.net