This filament offers the properties of Nylon (high strength, high flexibility, low surface friction) for the cost of regular ABS or PLA filaments. It can be successfully used for a wide variety of purposes, but the tradeoff is that it makes the printing process quite complicated.
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Pro Has nylon-like properties
Based off Taulman’s popular and very strong Nylon 645, this filament is strong, very flexible and has low surface friction.
Pro Several uncommon applications for 3D printed parts
Due to its strength and grippy surface, this filament can be used to produce weight-bearing surfaces, parts subject to friction and tapped/threaded parts. Its flexibility also makes it useful for fabricating plugs and gaskets.
Pro Great technical documentation
The full technical documentation is available at Taulman’s website. This is especially useful for professional engineers and those in the academic field. Furthermore, the filament was reviewed, tested and certified by St. Louis Testing Laboratories, ensuring the published technical data is correct.
A decent Nylon 645 filament can cost between $30 and $50. However, this filament is priced at around $20/$25, which puts its price on par with how much most PLA/ABS filaments cost.
Con Difficult to use
Nylon and nylon-like materials are hard to work with and the setup process is quite cumbersome. A heated bed plate is absolutely necessary or the material won't even stick to the plate. You’ll also need to coat the heated base plate with Kapton tape or Garolite. As the material is quite flexible, non-direct-drive extruders won't work and a very short direct-drive extruder is needed. Getting everything just right takes some time, and it will be a while before you can start making decent quality prints.