They're 'crimp beads' sold for making jewellery. They normally come with a hoop on one end, so I snip that off with some fret cutters, add a drop of black superglue in to the hole and tap them in gently with a small plastic faced hammer. I leave them slightly proud of the surface and once I've added some more black superglue (if needed) to fill the centre of the inlay, I use a small, flat file to make them flush to the fretboard.
Ill be stealing that technique please thank you very much.
i used to inlay brass or chrome wire into boards, looked good. but this just too cool.
As for the rasps. I have a pair of those dragons from stewie mac, Pretty good. Iv used them on a few necks & find them very easy to work with.
Got a pair of shintos orderd, a traditional styled jobbie like the one simo has pictured, & a plane styled one.
always good to experiment with new tools.