How to make a 3D printed Snake Robot-Part 1

I have earlier posted a video where I have shown step by step instruction on how to make it.
Few viewers had some queries and recommendations. Here is the link of the robot making video:
https://www.youtube.com/watch?v=20GU1Dcpep4
Among the queries and suggestions two were
1. How we make give it a 3D look
2. “My circuit not working”
I am making two episodes of videos to address above issues.
Part1 : It is about the 3D printed body of the snake.
Part2 : It is about the circuit design. https://www.youtube.com/watch?v=1gHJXLHsN8Q

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