- Used for a wide variety of applications due to its wet stiffness, abrasive tip cleaning action, lower bend recovery than nylon, and its inertness to most solvents, oils, acids, and chemicals. Found in food-safe applications.

Polystyrene - economical, flaggable filament used for aesthetics

Ixtle - Also known as Tampico, a biodegradable vegetable fiber with a soft-medium texture that can withstand high heat and softens in water

Metallic Wire - usually

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