[rld-tv01]

For those not familiar with creating 3D objects. Additive is merging two objects. Subtractive is removing a piece of an object. In the attached jpeg photo (from TinkerCAD) in #1 a rectangular cube has the front edges removed creating beveled front end. This can be accomplish by performing a boolean difference command with a 2nd cube at angle to the 1st cube. Also in #1 you see large small diameter cylinders to be used as vehicle axles. On the front end is 3 rectangular cubes joined as a "U" shaped figure. In figure #2 wheel shaped objects are added. The wheels can be made by taking a cylinder and subtracting a smaller cylinder shaped object then subtracting a smaller cyliner shaped object so the wheels will slide on the axle shafts created in #1. #3 a tail fin is added. Body fenders are added constructed out of cone shapes. #4 more cone shapes added. Some 3D software uses mesh objects (usually made of thousands of triangles). Others use more of a solid object (Nurbs, Pucky Balls or Blobs). Meshlab, Meshmaker uses meshes. Rhinosceros uses Nurbs. Some older packages from the 1980s used pucky balls or blobs. Think of creating a snowman figure by sticking together snow balls. If you want moving parts it might be better to use a CAD program. If your making a figure, scupture or statue (dog, horse, head of a person, totem pole etc) you might find an art oriented software more to your liking.