This is some fun in experimenting with linkages made from those thin wooden ‘popsicle’ sticks that is available to get at the craft stores.
by adding a ground pivot point on the coupler link causes a whole different affect, on the entire chain, These different configs, were done by moving the pivot points on the linkages to different holes, producing different output moves.
Lastly in the video I addded “glued on” another small stick to show the unique travel it takes as the output , as a result, from just moving the input lever in a sweeping arc.
This is woodworking because wood is used throughout the whole assembly.
Here is the video link.
have fun in the shop.