Polypropylene, or PP, is one of the most common polymers that you’ll find around the house. It’s great for its translucency as well as its resistance against chemicals and fatigue. Being both food- and microwave-safe, it’s often used in household plastic containers.

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For 3D printing, PP is great for anything that needs to be light, water-tight, or durable. Case hinges, for example, represent a very popular use, as PP can bend repeatedly without breaking.

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While PP’s excellent durability makes it an appealing material to print, it is notoriously difficult to handle. Let’s take a look at the material’s challenges as well as a few ways to get around them.

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