The Kershaw Oso Sweet is a 3D model of the knife of the same name, designed in Fusion 360. The knife is built with a joint so the blade moves into the handle to fold up as it does in the real world.

I started by taking pictures of the knife on a neutral surface to get good pictures to use as an outline. I then imported those pictures into Fusion 360 and created an outline for the blade. I only created the top half of the knife blade and mirrored it to create the full blade. I next moved onto the handle and created the outline. I again only built the top half the handle and mirrored it to create the bottom of the handle. I finished by adding the screws and bolts, and adding a joint on the hinge to allow for the blade to move.