Quad-Tracking a double-tracked mix

What If you have to different guitarplayers.
Dual tracking: each player records 1 or 2 same takes?
Quad tracking: each player records 2 or 4 same takes?

Its alot of work to do dual tracks with two guitar players...
 
Im sorry i don't understand. What do you mean re-order similar riffs?

9 times out of 10, the riff or part is repeated after itself or in another part of the song - you can take that part from the original track and put it in sync with the same guitar part from a later/earlier part in the song, and it will be "double tracked."

IE:

gtr1: 1 2 3 4
gtr2: 1 2 3 4

1,2,3,4 represents 1 riff repeated 4 times, and it's currently doubletracked. You'd chop it up and move things around to look like:

gtr1a: 1 2 3 4
gtr1b: 2 3 4 1
gtr2a: 1 2 3 4
gtr2b: 4 2 1 3

a = original, b = new track made from chopping/moving the riff. You now have a "quadtracked" version of the same riff, but you never actually quadtracked the song with the guitarist(s).

The problem with this method is that the players aren't always tight enough in the repeats of their riffs to have it match up as tightly as you'd want.
 
Im sorry i don't understand. What do you mean re-order similar riffs?

9 times out of 10, the riff or part is repeated after itself or in another part of the song - you can take that part from the original track and put it in sync with the same guitar part from a later/earlier part in the song, and it will be "double tracked."

IE:

gtr1: 1 2 3 4
gtr2: 1 2 3 4

1,2,3,4 represents 1 riff repeated 4 times, and it's currently doubletracked. You'd chop it up and move things around to look like:

gtr1a: 1 2 3 4
gtr1b: 2 3 4 1
gtr2a: 1 2 3 4
gtr2b: 2 4 1 3

a = original, b = new track made from chopping/moving the riff. You now have a "quadtracked" version of the same riff, but you never actually quadtracked the song with the guitarist(s).

The problem with this method is that the players aren't always tight enough in the repeats of their riffs to have it match up as tightly as you'd want.