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PLA (Polylactic Acid): Easiest to print, good surface finish and detail, cost-effective—best for prototypes and display parts (lower heat resistance).
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PETG: Strong and slightly flexible, good chemical/moisture resistance, more heat-resistant than PLA—great for functional parts and light-duty fixtures.
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ABS: Tough and impact-resistant, better heat resistance—good for enclosures and functional parts (can warp; typically needs controlled printing conditions).
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ASA: Similar to ABS but better UV/weather resistance—ideal for outdoor parts and durable housings.
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Nylon (PA): Very strong, wear-resistant, and flexible with excellent fatigue resistance—great for gears, hinges, and end-use functional parts (often needs dry storage).
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TPU (Flexible): Rubber-like flexibility and impact resistance—best for gaskets, grips, bumpers, and vibration-damping parts.
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Polycarbonate (PC): Very high strength and heat resistance—used for demanding functional parts (more challenging to print).
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Polypropylene (PP): Lightweight, chemical-resistant, and fatigue-resistant (“living hinges”)—useful for containers and snap-fit parts (can be tricky to print).
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Carbon Fiber–Filled (PLA-CF, PETG-CF, Nylon-CF): Stiffer and stronger with improved dimensional stability—excellent for rigid brackets and tooling (more abrasive; needs hardened nozzle).
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Glass Fiber–Filled (Nylon-GF, etc.): Strong, heat-resistant, and more stable than standard nylon—good for structural parts (also abrasive).