I use this handle to push or pull on two Bowden cable - this controls the eyelids or ears of my hand-puppets - simple cable animatronics. The springs keep the cable in a neutral position when I do not use it.
https://www.youtube.com/watch?v=qyR\_Tw-Az2w
You need two 10cm long, 4mm diameter steel or brass rods, four springs (you have to find some springs that are easy enough to compress, but powerful enough to return to the default position), and two screw nipples (cable stop) with up to 6.7mm diameter.
Category: DIYThe author marked this model as their own original creation. Imported from Thingiverse.