Problem with rotation in 3D picture control

[We love Mechatronics]

Hi everyone:

I am trying to create an image of a human finger with 3D picture control, but in a simpler way. I intended to use three square boxes which are created by using Create Box VI.. Then I use Translate Invoke Node to line them up one after another. Then, I use Rotation Invoke Node to manipulate the rotation of the second and the third box. But, here are the problems.

The first problem: How can I rotate the second box(Green box) around the edge of the first box(Red box), so that when the green box rotates, it doesn't overlap with the red box. I want it to be the same with the blue box, so that the blue box rotates around the edge of the green box. 

The second problem: At the moment, the third box(Blue box) is rotating around the origin of the first box(Red box), how can I change it so that the blue box rotates around the edge of the second box(Green box). 

I have attached the VI to this post. Please could anyone help me.

Thanks very much

Tommy Yip

[We love Mechatronics]

Sorry, the VI that I attached in the previous post is incorrect. 

The file attached to this post is the correct one. I set the rotation axis as z-axis, but in the previous post is just a control. So please ignore the previous file.