I'm getting access to a laser cutter and looking at designing some custom terrain. I've got a basic design figured out for modular components. But I'm not sure of the scale I want to use. I want to design the building with panels in mind. Where a building could be 1 panel by 2 panels. then in each panel I would have a door\window\garage door\blank. The question is how big should each panel be. Originally I was thinking of using 3 inch panels, with walls being 3,6,9 or 12 inches long. I know 3 inches is too small for a full building side, but I was keeping that for L shaped building or second story component. I'm having second thoughts on this and might move up to 4 inch panels. The problem is that my current design does not allow 2 building the same size to stack properly. I think 4 inch panels would limit some options. In my last table had lots of small building that needed to touch to make larger building, I want to make a set of larger buildings that have interiors this time. So I'm asking everyone how big should I make the panels 3 or 4 inches. Are 4 and 8 inch building better or worse than 6,9 inch buildings.