In message , Dave Stanton
writes

Polystyrene cement actually melts the plastic and makes a better joint.
Did you never build any airfix models when you were younger?

Having had the same problem as the OP, polystyrene cement is better than
superglue in this case

Only if the plastic is polystyrene !!

Well it is,

which is why I made the suggestion, having had the same problem a couple
of years ago
--
geoff