Hello Greg,thanks very much for your reply.
ON my Railboard is impossible to remove this dust(...if it is so)
i have tryied with finger tips,nails,pencil eraser,pen eraser,nothing.
Now I suspect that my railboard anodizing is less roughness,an so maybe :
- the nickel dust from the strings is much little in grainess than normal
and then it is harder adsorbed in the anodizing.
or (but is the last option,and i don't want to think of it!)
- it is loosing the anodizing
because it is not important for me to leave or not that ipotetic dust on it
I wrote to Cambria,only to have suggestion to make a TEST,for example.
And i'm waiting for an anwer from the stick staff,only to be sure...
because my Railboard is really SUPERB!!!and i love it!
(your last video(one string melody...) is really fantastic and inspiring!)
in the last , thanks Greg, you're great ! bye!