This shows the puppet head published on Thingiverse: https://www.thingiverse.com/thing:654... It may help you to see, how things are mounted. Basically I did not plan to publish this puppet face/head, because it was intended just to show the capabilities of the bechele software in the demo video    • Demo of bechele open source animatron...  , but people have asked for it, so I published the puppet face/head.