An US professional guitar maker, Daniel Roberts, for who I did some rasps and ended up being a friend, has made a video on his techniques to shape a guitar neck.
I thought some of you may enjoy it.
Cheers,

Noel Liogier

Part 1 :
Rasping a guitar neck - part 1 - YouTube

Part 2 :
Rasping a guitar neck - part 2 - YouTube

Part 3 :
Rasping a guitar neck - part 3 - YouTube