Tutorial: How to model self intersecting Möbius strip
Create object like mobius strip is simple, and should be divided into separate operations.
Answered with a tutorial: https://grabcad.com/tutorials/tutorial-how-to-model-self-intersecting-mobius-strip
good tutorial, BUT you could specify for the beginners (with surfaces), that when extruding the second surface on the second half circle, you may NOT project the line, but construct a new one and dimension it, otherwise you will get just errors or a reference dimension that couldn-t help you finishing the formula or making the Sweep.
So i'm stuck on 2 and 3, i don't understand by what you mean to change the trajectory to half circle. Also on 3 how do you change the dimensions command I've never done that before. When i try to look it up nothing is helping to explain what to do.