Rhinoceros is a powerful 3D modelling software that can be used for many applications. In this introductory workshop you will learn to navigate Rhino 5 and create 3D models that can be exported for printing. 

From Rhino3d.com: 

Rhino can create, edit, analyze, document, render, animate, and translateNURBS* curves, surfaces, and solids, point clouds, and polygon meshes. There are no limits on complexity, degree, or size beyond those of your hardware.

Special features include:

Uninhibited free-form 3-D modeling tools like those found only in products costing 20 to 50 times more. Model any shape you can imagine.

Accuracy needed to design, prototype, engineer, analyze, and manufacture anything from an airplane to jewelry.

Compatibility with all your other design, drafting, CAM, engineering, analysis, rendering, animation, and illustration software.

Read and repair meshes and extremely challenging IGES files.

Accessible. So easy to learn and use that you can focus on design and visualization without being distracted by the software.

Fast, even on an ordinary laptop computer. No special hardware is needed.