After printing the first pair of piranhaphish's “Foot-Base” and “Foot-Cup” I realized that the brackets from “Foot-Base” tend to break when the upper “Foot-Cup” part is snapped into them. 

So I simply added a reinforcement cube to each of the brackets to stop them from breaking. 

This part replaces the “Foot-Base” from pirahaphish's remix. You have to print one for each foot of the Bender.