On 24 Nov, 23:21, GMM wrote:

Somehow I suspect that a solventy-thing (like model aeroplane glue)
would do a better job as, to some extent, it would weld the plastic (I
know straight chloroform works well for perspex, for example), but
does anyone have any positive experience of trying to do this or is it
just a no-go?


The real trick with using a solvent type adhesive is to know exactly
what type of plastic you're sticking. The "model aeroplanes" are
moulded from a polystyrene plastic and the adhesive is just that -
polystyrene and a volatile solvent. To get a really tight joint in
these models the experienced modellers use, what is essentially pure
solvent like, Acetone or Methyl Ethyl Kytone.