CA hinging tip.
When I do CA hinges, I do three things to keep the glue from getting in the hinge line:
1: Use one of those thin, capillary tube tips on the CA glue bottle.
2: Rub some waxed paper over the monokote surfaces in the hinged area before assembling the parts.
3: Keep a bunch of strips of newspaper about the size of a bandaid at hand to stick in the hinge line and absorb any extra glue.
Peter