hey, i actually only saw this today. during my Design tech incursion at school, where i was making my guitar all day in my schools ausome workshop...
i saw some kids in year 7 making shelves. and they had drilled the holes too far, so they filled them with some kind of putty.
now i don't know what it was, but it was very effective, it looked just like the wood, but without the grain. i also think that it dries just as hard.
if somebody could clarify what this is, that would be great, because i would also like to know for future referance
If you could alsso post a picture up, it would be helpful in knowing what the situation is....
Charlie G