I really have never tried RC 56 glue, but I don't see any reason why it would not work as well. If you have some, do a test for yourself by hinging a couple of pieces of balsa, letting dry overnight and then trying to pull the hinge apart. Be sure to pull in a straight line and not twist or pry on the hinge. If you do that you will not get a true test of strength and will probably break the balsa wood. Using the Formula 560 canopy glue, I cannot just pull straight across the hinge gap and pull the hinge apart. I'm 6.4" and weigh 230lbs. Believe me the hinge joint is strong.