Nope
Somehow reminds me of my cousin 20 years ago who bought internet received the modem plugged it into the computer and then called me complaining she is still offline.. so I asked if she tried to plug the modem into the phone jack on the wall. which she didn't ... lol
Please don't use gorilla glue.
My answer "no" was to the question whether I put glass under the box. I did not use gorilla glue.
I find an oscillating tool even better than a router. Tighter lines and you can get the corners square. Less mess as well.
To prevent mess, I used a corded router with a fan speed controller. Since I was cutting a thin layer of plastic and styrofoam, the tool was not slowing down. Much less mess and less prone to big mistakes due to the router speed.
Before you laminate the layers of carbon / glass over the top , sand the paint and bog off the surrounding area . First layer a bit bigger than the box , next layer an inch wider all round , same again and so on . 4 to 6 layers . I'd do 6 cos I'm a box head . I'd hand lam in two goes with a sand in between. You could do 4 layers in one go.
Yes, I sanded the area with 80 grit and wiped with alcohol before laminate. First layer was a little bit bigger than the box and the next two were approx one inch bigger. Today I am putting the 4th and last layer (since this is to learn how to wingfoil, I am not too concerned about durability).