Springs are yet another component in Phun which allow two objects to interact. In springs, you can add tension between two objects just like any other spring. Similar to hinges, first create the object you to attach the strings to. Click the Spring tool and drag a spring from the blank space or one object to another.

Spring properties such as strength and dampening can be changed by right-clicking on the spring and then choose Spring in the menu that pops up.
Chains are also attached in the same manner as springs by dragging lines between two points after selecting the Chain tool. Unlike springs, chains can be created without being attached to other objects. Chains can also be set up as motors like hinges by right-clicking on it and clicking on Chain again.