Complete the code to identify the main material used for living hinges.
The most common material for living hinges is [1].
Polypropylene is widely used for living hinges because it is flexible and durable, allowing the hinge to bend repeatedly without breaking.
Complete the sentence to describe the key design feature of a living hinge.
A living hinge is designed to be [1] and [2] to allow repeated bending.
Living hinges are thin and flexible sections of material that allow bending without breaking.
Fix the error in the statement about living hinge durability.
Living hinges fail quickly if the material is not [1].
Living hinges need flexible material to endure repeated bending; brittle materials break easily.
Fill both blanks to complete the design rule for living hinges.
The thickness of the hinge should be [1] enough to [2] bending without breaking.
The hinge must be thin enough to allow bending but still support repeated use without breaking.
Fill all three blanks to complete the living hinge design guideline.
Use [1] material, keep the hinge [2], and avoid [3] stress points.
Living hinges require flexible material, a thin design, and smooth transitions to avoid sharp stress points that cause failure.