As some of you know I've been working on a street battle diorama. I've run into a bump on the road though. I poured plaster of paris directly onto plywood to create my street. As I was sanding it, the entire slab poped off. Does anyone have any suggestions on how I might be able to to re-attach it or, if I have to repour it, how do I properly secure it to the plywood? All comments, questions and suggestions are more than welcome. Edit: Thanks guys I've made up my mind on what I''m going to do.