oohhhhhhhhhhh, nooooo, hugs and all but that does not give you straight grain.....saw a lady doing this once with a woven check (yarn dyed) and when she was going to cut it she was about to cut diagonally across a square.......we had a friendly discussion about straight of grain and have been sewing friends ever since.
ok this was a reply to an earlier comment about lining up selvages....sorry, this was to the lady in Canada...