Have been playing around with several 3d modelling tools like Rhino and Blender, but as simple as MOI can make it to create cutout objects, I didn't discover with the other tools mentioned. Ok, I'm not a 3D modeller, but still, i spend a bit of time playing around. Super cool this tool also has support for Nerves export! note: for those who model for the 3d printer, you may like to use nerves in case high accuracy is required.