Originally Posted by Ya Tu Sabes
Also, if you're lazy and enjoy doing things half-assed (like me), you could just put the axle in the dropouts, line it up so the same amount hangs out on either side, and then mark and cut.
No, my way is lazier. My way only needs one cut, yours needs 2. And in your way, the spread of the frame is not taken into account. Most frames are not exactly 135mm drop out to drop out. And you do not want the axle to be flush with the outside of the drop outs. There needs to be a slight gap to the axle from the outside.