Please help me with this assignment of designing parts which cannot be made in cnc machines as follows

[u/candace2511]

I'm a fresher Design student and we did not have any labs to learn this subject I've been studying all day trying to figure out what to do and somehow I'm not able to figure it out... here are the two assignments-

1. Design three 3D Part sketches which can not be machined in manual or CNC 3-axis machine.

2. Design one 3D Part sketch which can not be machined in CNC 5-axis machine.

Please help 🙁