MOI uses the same kernel as Rhino, it is a GREAT and eassy to use tool  to learn to create surfaces and for reverse engineering , and it works on both PC and MACS

Moment of Inspiration (MoI) is an easy-to-use yet powerful surface modeling package that focuses on fast, intuitive creation of smooth, high-quality geometry. It can be thought of as a simplified and more approachable alternative to Rhino, built around a clean interface and a minimal set of well-designed tools. MoI excels at NURBS surface modeling, making it particularly well suited for creating complex, organic, and industrial design forms without the steep learning curve often associated with more advanced CAD software. It runs on a wide range of devices, including Macs and tablets, which makes it accessible for users who want flexibility in how and where they work.

As a learning tool, MoI serves as an excellent stepping stone for designers planning to transition to more advanced packages such as Fusion 360 or Rhino. It builds a strong foundation in surface modeling without overwhelming new users. For continued learning and inspiration, the user forum is highly recommended, offering practical tips, workflows, and real-world examples from experienced users.

If you don't know how to 3d model, I will show you EVERYTHING you need in 15 minutes to get started now. 

MoI 3D is CAD software that's very affordable and very user friendly. In this video I'll explain the interface and how to use most of the tools.  As a 3D animator and polygon modeler I have very little experience with CAD software so I'm really loving how easy this is to use once you get the basics down 

Intro to MOI

This video explains how to set up Moment of Inspiration by adjusting preferences such as units, interface layout, and modeling options to create an efficient workspace before designing.

Naming Files

The video teaches how to assign meaningful names to objects in Moment of Inspiration, helping you organize your design files and manage geometry efficiently as you model. 

Modify Tools

The video shows how to use Moment of Inspiration’s cookie cutter tool to remove or trim shapes by cutting one 2D circle from another using simple surface modeling. 

Boolean Operations

The video demonstrates how to use Moment of Inspiration’s Boolean commands—specifically Boolean Union to combine objects and Boolean Difference to subtract one shape from another in modeling. 

Revolve

While most, if not all, 3D packages make good use of REVOLVE, Moment of Inspiration goes a step further than most, with RAIL REVOLVE.  In this tutorial we explore both forms of the Revolve Command.  In addition, we explore alternate ways to create circles.

Taper

Moment of Inspiration goes beyond simple extrusion in ways that allow complex shapes to be created with very few steps.  EXTRUDE's full compliment of extrusion types includes  SET DIRection, SET PATH, TO POINT and TAPER.