I have not had any problems with CA hinges todate either. There are however one or two earlier posts on this thread where the hinges have failed. There is another thread where it is recommended to use a wax crayon, and draw a line where the material is going to 'hinge'. This will stop CA going into the hinge area. It maybe that 'failed' hinges mentioned earlier were as a result of surface flutter. I just don't want to take a chance