BOTtle is a robot like many others but with a particularity, the wheels are made of plastic bottles as you can see in this video:
The components I will be using:

The servos are already attached to one another with double side-tape, I will show you how to attach the wheels to the servo horns

Start by adding wood self-tapping screws to the servo horn just a little in a way they won’t fall

Repeat this process 4 times

Open small holes in the exact place where the screws will be tight. I used a soldering iron.

Tight both screws to the wheels


Now I am placing the bumpers on the front of the bot on a PVC sheet (in this post you can see what I have done for a Sharp sensor)

And now the caster wheel, those screws tips are going to be cutted out

The screw tips are gone and added a bit of super glue because the PVC melted when cutting the screws

To attach the pvc base to the servos I am using double side rubber tape

And this is what I have done so far, more will be added soon (I hope)

