Gluing Styrene

[HRFWCI]

I am using .020 styrene to mount my backdrop. It has pebble finish on the backside, smooth on front. I have cut four inch wide pieces of same for the spline. My questions are: would I be best using the pebble to pebble or pebble to smooth and what is the best glue?

[T-Man]

Styrene is just model airplane plastic. Testor's will work. You would think they would have a better product. It still carries the ventillation warning.

Just rough the edges with sand paper. This will help the glue.
We had this question before ( alfalfa posted it) no one came up with a better solution.