I am gluing a 1/2 inch piece of foam to a piece of plywood for the tunnel walls.  Thank you to all the answers and help!    Bud

Can anyone tell me what is the best caulk to glue foam. I am trying to cement 1/2" foam board for tunnel walls.  Thanks

Len, thanks for your reply. I did not fully explain my situation in my first post...getting upset so I just blurted out without going into detail. I have modeling glue, my problem is getting to the windows.

Can the Bach Man reply to this?  I recently bought a new engine and tender, 4-6-0, with sound on board. After setting up the engine on my track, the windows in the cab are popping out and falling into the cab. I got them out but cannot hold them in place to re-glue them back. I can't maneuver them into where they should be.  Is there any way I can take the cab body off to fix this. I undid the 4 screws at the bottom, but it is attached by wires on the outside and won't separate.

My engine windows keep popping out. Any idea how to glue them back?