Hey -ryan-!
On my savannah monitor enclosure I cut my plywood and FRP seperately, mostly so I could screw the plywood onto the wooden frame and have a good, strong hold. I cut & installed the plywood & then cut/installed FRP.

With torts, you could probably get away with gluing the plywood on instead of screwing it on, and therefore fasten the FRP onto the ply first & then make your cuts.

I used *Liquid Nails or a similar construction adhesive in the big tubes (larger than regular caulking tubes). Gluing FRP to ply I zig-zagged it, a lot, to cover as much of an area as I could without having to trowel it on.

* Special note:
Some tubes of liquid nails says it's not for FRP, so read the back of 'em. They do make a special FRP adhesive that I've seen in 1-gallon cans for somewhere around $12 - $15.

Assemble both panels while adhesive is still fresh and keep rubbing it down to make sure you get all the adhesive transferred and spread out good. You'll probably have to go back & rub it down a few times before it really starts holding it good.

The temperature of FRP, ply, adhesive & room needs to be all the same, and preferrably above 70 degrees (F). It will work in cooler temps but it will work you to death by not conforming easily.

Hope this helps!

Later!
HH
-----
Due to political correctness run amuck,
this ol' hillbilly is now referred to as an:
Appalachian American

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