Thanks for your answer, i’ll try when i can. For the moment I just picked up the floor template into the Geometry folder to make my pool water surface. This works fine. For the moment I create some scenes only using BSP for building walls, rooves and grounds. I find them easier to modulate with material settings and things like that. The problem is that i’m not really at ease with 3D software like Max. I don’t know what exactly to do in it.