The challenge of identifying the "best" 3D printer filament arises from the diverse requirements of various applications, much like using a single material to construct every part of a car would lead to impractical designs. Materials science plays a crucial role in product design, balancing factors such as price, performance, durability, and environmental impact. Similarly, effective 3D printing requires choosing the right filament for specific needs.
For beginners focusing primarily on aesthetic prints, PLA is often the ideal filament due to its ease of use. However, those looking to create functional prints like bookshelves or monitor mounts will quickly find the need for more durable materials. This leads to exploring a range of filaments based on the type of printer and intended application.
If You Have an Entry Level 3D Printer
For those using entry-level printers, PETG is a versatile filament that provides a good balance of tensile strength, toughness, and thermal resistance, making it suitable for various applications. It is user-friendly and can be printed on lower-cost, unenclosed printers. With improvements in heat resistance and excellent UV stability, PETG is ideal for outdoor functional parts. Some variants like carbon fiber blended PETG-CF or glass fiber PETG-GF offer enhanced properties like reduced warping and improved dimensional stability.
Additionally, incorporating TPU into your filament collection is advisable. This flexible filament is robust and UV resistant, making it perfect for creating shock-absorbing components such as phone cases and shoe soles.
If You Have an Enclosed CoreXY 3D Printer
For those with enclosed CoreXY printers, a broader range of engineering filaments can be utilized. ABS is a popular choice due to its toughness and high-temperature resilience, while ASA is preferable for applications exposed to UV light. For even greater toughness and heat resistance, PA6 (Nylon 6) is suitable, but it absorbs moisture over time, leading to potential softening of printed parts. In contrast, PA12 offers a more moisture-resistant alternative.
For ultimate strength and temperature resistance, polycarbonate (PC) is the go-to filament. If you’re willing to invest in premium options, PPA CF (polyphthalamide blended with carbon fiber) provides exceptional characteristics like high impact resistance, stability, and chemical resistance, making it perfect for demanding applications, even automotive components.
Regardless of the filament you choose, it is crucial to have proper storage solutions, especially for moisture-sensitive materials, ensuring optimal print quality and durability in your projects.