#1
Nitro-Cellulose Lacquer vs Polyurethane finishes

07 Fender American Deluxe Strat
07 Fender Custom Telecaster
09 Seymour Duncan Pickup Booster
09 Fulltone OCD V.4
10 Ibanez WH-10 V.2
09 Splawn SuperStock
10 Jet City JCA-20
97 Fender Hot Rod Deluxe

Yeh the SICK! bit sounds a bit stupid.

#2
Nitro is more flammable and, judging by the '70s Fenders, wears after some years. Poly is used more now, and Nitro is more of a vintage-style finish. I think Gibson uses a whole load of Nitro on their instruments.
#3
Nitro allows the guitar to breath, though it can fade, it sounds better after time. Poly makes a shell, it doesn't fade, but it doesn't allow the wood to breath.
Quote by chip46
"I'm discontinuing production on the Timmy now as well. It might come back into production at some point down the road, but probably not because people will just clone it anyway cause they're stupid jerk face doo doo heads. -Paul C."
#4
gibson does not use a WHOLE LOAD of nitro, they use the thinnest amount molecularly possible. they put a chemical on the surface of the guitar that attracts finish, then they hang the guitar on a belt, the belt takes the guitar, it puts it into a small chamber, sprays a small amount of lacquer, it adheres to the chemical on the guitar, boom its done.

polyurethane is plastic, it will make your guitar look like a new car. a son of a bitch to repair, fairly easy to work with, sucks balls if you get a run/drip/spit though, alot of sanding.

lacquer is...lacquer, it will make your guitar look like an instrument... its difficult to work with initially, but much easier to repair