Thickness marquee plexi?

[MB]

Just a quick question. How thick should the sheets of plexiglass be that the marquee print
gets sandwiched in between? Marquee size is 18cm x 63cm (7inch x 24inch).

Thanks!

[MB]

Would 2 times 1mm work?
Guess they're standing straight up and won't be flexing much,
unless you push them.

[apfelanni]

i take 2x2 mm plexi for that and add 2 mm for the groove so the plexi doesnt fit in 2 snug.

[MB]

2mm it is then! Sounds better. 1mm seems a bit thin on second thought.
Thanks for your input.