Glue plexiglass

[Johnen]

Hello!
This might not be the right section and should be under Other. But I think there are many knowledgeable people here

I'm going to make smaller signs. It's plexiglass panels that a poster/film will be glued onto. However, I don’t know at the moment exactly what material the poster is made of.

But what is the best adhesive to use? I've been considering 3M spray adhesive.

 

[anders07]

I have used regular "super-glue" before and it works well but you have to be quick...