Fangs and eye mechanism for a muppet style puppet:
So I'm working on a proof of concept build of a puppet that has a mechanism in the head that can make the eyeballs roll back into the head while also at the same time extending the 2 front fangs. This way The character has a normal look and a possessed by demons look. Here's concept art:
I started designing the head in 3D to 3d print it so its strong and holds the eyes:
And I started to prototype the mouthplate:
Unfortunately I can't hold the teeth down unlessthe mouth is closed. I'd like for there to be a way to keep the teeth in the down position (And also the eyeballs rolled back) until I want him to "change back"
Any ideas on how I can achieve this? Any help would be appreciated.