Polishing keytops

[C. E. Hood]

Hi all - I'm in the middle of a tedious task, doing the latest fortepiano.  The keytops are covered with bone, and it's all filed and sanded flat on a belt sander using the finest grit I can obtain, 230.  I then hand sand with 400 & 600 wet and dry, then 1600micron paper.  Then to the buffing wheel, a hard felt one, using the usual white keytop polish.  Takes a long time to get an adequate shine.  I've done this with ivory too, about the same in all ways to work.
     Anybody have experience with doing this?  any comments?  how do you proceed?  I've done it for years but would love to streamline the process.  There are no books or pamphlets on this as far as I know, just brain-picking, which I do from time to time.  I'll also ask the harpsichord & fpo lists.
    Best, Margaret Hood
    www.fortepianos.pair.com