Robart hinges on giant scale and Klett pin-piont hinges on anything smaller. I had two CA hinges break on a 60 size Ultra Sport elevator (well over 300-400 flights). Perhaps I used too much CA glue as mentioned above but that only needs to happen to me once. (by the way, having the gaps sealed on the elevator help me get the plane down without a problem.) I always found it tough to know how much CA was "too much" or "not enough to hold". Some say to count the drops of CA but that's all relative to how big of hole (or how clogged it is) is on the glue bottle. I know many many people that use CA hinges without incident but I haven't used them in years.

Just my 2 cents...........Mark