Ok, the plexi is 18" x 24" - This is the size it comes in, in Lowes. The person in the glass cutting dept cut 5" off the length of one piece for me. So the cut piece is in front and the rest of the cut piece is in back of the machine (see picture).
The glue is Loctite Stik'nSeal, No Mess, in a green and blue (and red) package. It is non-toxic, safe for use around children and pets. Since I have 2 dogs and a cat that hang out up there in the sewing room with me, I didn't want to use anything not safe.
I hope that answered most of the questions.
Thanks again for looking.
Martha in VA