On Sun, 3 Jan 2021 20:36:12 +0000, williamwright
wrote:

Does anyone know what might be suitable?

'What's the best glue for everything'? ;-)

What *sort* of 'model plane' are you talking about here? If it's yer
'Airfix' type plastic model here as if so I use "Revell Contacta
Professional" because it works and comes in a very handy dispenser
that doesn't block if you keep using it regularly and leave the fine
nozzle clean if you don't.

Cheers, T i m