oh might be it! Yes there's a tutorial somewhere here, wave bead. Might have been mentioned in an earlier comment by Roberta?
http://lampworketc.com/forums/showth...highlight=wavy
Works well in boro, a few have tried it in 104, you might just have to work slow. Funny enough, this sort of bead is why I started lampworking to begin with, just never made many as it turned out, except when I played around with some boro.