I really like aesedepece's One object, three geometric shadows (https://www.thingiverse.com/thing:22021) and it reminds me of a drafting challenge I was presented when I first started 3D model visualization and 2D drafting. Was asked to create the ISO view of the object using the Front, Top & Right Views. There are no hidden lines and the shapes on the front and top are unit squares.
Just like aesedepece, I have deleted the STL preview in order not to spoil it for you.
Can you guess how the object looks?
Overview and Background
It is easy to create 2D engineering drawings from 3D models using modern CAD tools. Creating 2D engineering drawings is an art that is being lost with the dependence on 3D models. What about creating 3D representations in a 2D environment (in the drafting) without creating a 3D model to create projections from?
Lesson Plan and Activity
3D visualization of 2D projections
Given the 3 projected views (front, top, and right) on the attached image, along with the information that there are no hidden lines, can the student determine what the 3D object looks like?
It is a real object.
Student only needs a piece of paper, a writing or drafting instrument, and their imagination