ok, ive just found a cheap classical guitar in my friends house and im in the process of repairing it. it has an horrible buzz in the E and A strings and the low e and B strings cant stay in tune for more than 30 seconds... so i took off all the strings and the nut came off... is that normal? should i glue it? and i was thinking of raising the bridge with a piece of paper to eliminate the fret buzz, but im not sure exactly where to put it... help please?
I would suggest taking it to get fixed... Fret buzz sounds like a neck problem where the neck shifted due to using different gauge strings. The nut shouldn't come off and I have no idea what to do about that other than take it in.
On some guitars the nut isn't fastened, perfectly normal.
If it really is cheap then its not worth getting it fixed, considering you can buy a decent beginners classical for about £50.