Analysis of Nylon-esque TPU Filament Using CC3D's 72D TPU: Evaluation
The 3D printing world has a new addition to its flexible filament family with the introduction of CC3D's 72D TPU. This filament, with its Shore D hardness rating, offers a unique balance between flexibility and durability, edging closer to the properties of polyamide (nylon) filaments.
## Hardness and Comparison
The 72D TPU, with a Shore D hardness of 72, is positioned at the firmer end of flexible materials. In comparison, Bambu Lab's 68D TPU, with a Shore D hardness of 68, is slightly softer. This difference in hardness means that the 72D TPU is potentially more rigid and less elastic than the 68D, offering improved abrasion resistance.
## Abrasion Resistance
Both 72D TPU and 68D TPU are advertised for their strength and wear resistance, suggesting improved abrasion resistance for a flexible filament. However, direct quantitative data on abrasion tests are not readily available for either filament.
## Printability
While independent testing has been conducted on the 72D TPU, detailed printability observations are not specified in the available summary. The manufacturer's official documentation is also limited. Bambu Lab's 68D TPU, engineered for Bambu Lab's Automatic Material System, is likely optimised for smooth feeding and compatibility with multi-material setups.
## Similarity to Polyamide (Nylon) Filaments
Despite some speculation, the 72D TPU appears to be pure TPU, similar to the Bambu Lab 68D filament. However, its high hardness and wear resistance bring it closer to the mechanical feel of some nylons, though it lacks the chemical resistance, low friction, and high fatigue strength of nylons.
## Conclusion
The 72D TPU is the harder, more rigid option with good wear resistance, edging closer to the feel of some polyamides but not matching their chemical properties. Bambu Lab's 68D TPU, on the other hand, is a standard TPU, slightly softer and appears optimised for reliable printing in multi-material setups.
Neither filament is a true nylon alternative, but the 72D TPU's hardness and durability may appeal to users seeking a nylon-like material for certain mechanical applications. For multi-material printing, Bambu Lab's offering is likely more user-friendly, while CC3D's may appeal to those needing extra rigidity and abrasion resistance, provided they are willing to fine-tune print settings.
Technology-wise, both the 72D TPU and Bambu Lab's 68D TPU exhibit strength, wear resistance, and flexibility, showcasing advancements in the realm of flexible filament materials. However, the 72D TPU, with its higher Shore D hardness, offers improved abrasion resistance and increased rigidity compared to the 68D TPU, making it a potential alternative for users who need a nylon-like material for specific mechanical applications.
