Hi all, I am a student in industrial design, and i have a project about making a 3D model of a part of a city and i then i would like to print in with Strong and Flexible Plastic. Its size is actually 300mm x 200mm So i wanted to ask you some questions about mechanical resistance and talking about what king of solution is better in order to remove materials as much as possible (for saving money :/) (1) - i thought of a sandwich's structure with a core (grid represented in blue), but i dont know what dimension do i have to choose, *** Is it enough resistant to make for example 1.5mm of a support // 3.5 mm for the core - and finish with 1mm support? should i try more/differently? [ the below picture represents top view of the model, red things are buildings] (2) - If i choose 1 mm width for the core, is it enough strong?, maybe 2mm is more stable? or else should i add a border to reinforce the whole model? mentioned in previous picture Thanks for any help anyone may be able to provide.