Here’s a quick little example of how to create a 3D CAD Model for a corner bracket, performing a stress analysis on it, and then creating a finished photo-realistic rendering. As you can see, once we have created a 3D CAD Model of an object, there is a lot that we can figure out from there but of course there are limitations and it is still a just model but pretty cool and extremely useful none-the-less. This scale compares the size of the actual object to the size of the model drawn on paper. With manual drafting, you must determine the scale of a view before you start drawing. With 3D CAD modeling we can create assemblies of parts to see how they fit together, test how they will react to forces applied to them, drop objects to see if they will break, test the motion and interaction of moving parts within an assembly, test how fluids will flow through them, evaluate how they will be manufactured using simulations, and render near perfect images to see how products will look in real life. The advantages of CAD include: the ability to producing very accurate designs drawings can be created in 2D or 3D and rotated other computer programmes can be linked to the design software. This is where things get really interesting and the math problems get insanely long. This allows us to create a virtual “model” of how the object will behave in the real world, even before it is ever built. Now what about the “modeling” part of 3D CAD Modeling? When using 3D CAD Modeling, you’re essentially creating a virtual reality object that can have all of the same properties as an actual physical object: material, weight, size, optical properties, physical properties, etc.