i appreciate the time savings of ca hinges w/a slot machine. i've used the sig easy's. t pin to center. flex for full deflection, several quick drop of thin zap, hold 10 seconds, repeat opposite side. don't reapply ca after it has been glued once. after surface is done, flex multiple times (beyond the necessary deflection) to loosen. they always seem to be stiff enough that the servo binds with full deflection (cub elev doesn't move much; usually not a problem there, rudder needs full deflection), even with excessive hinge gap (no difference). i built a funtana s 90 w/supplied hinges (very thin material), these bend like a nylon pinned hinge, no resitance w/full 3d deflection. recently i've gone back to old fashioned dubro nylon pinned hinges epoxied in, outer hinges i epoxy a peice of t pin bent 90 degree, not coming out. what about zap hinge glue? i have done numerous test peices with sig easy's, i can't figure them out. nylons are more work, but they pivot with no resistance, i don't allow any of my servos to bind. i'm sure some one has had better luck with ca hinges than i.