When comparing Taulman3D Bridge Nylon Filament vs NinjaFlex Flexible Filament, the Slant community recommends NinjaFlex Flexible Filament for most people. In the question“What are the best filaments for 3D printing?” NinjaFlex Flexible Filament is ranked 5th while Taulman3D Bridge Nylon Filament is ranked 6th. The most important reason people chose NinjaFlex Flexible Filament is:
This is truly elastic material, which means that the material will deform under stress (stretched or compressed), but the moment stress is removed, the material original shape is restored. The exception is if tensile/compressive yield point is reached: in this case permanent deformation occurs. This filaments tensile yield point takes place at 660% elongation, which means it's very hard to break this material only by applying tensile stress.
Specs
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Pros
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.
Pro Affordable
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.
Pro Recovers original shape after deformation
This is truly elastic material, which means that the material will deform under stress (stretched or compressed), but the moment stress is removed, the material original shape is restored. The exception is if tensile/compressive yield point is reached: in this case permanent deformation occurs. This filaments tensile yield point takes place at 660% elongation, which means it's very hard to break this material only by applying tensile stress.
Pro Good chemical resistance to a variety of substances
This filament has limited resistance to a variety of alcohols, alkali and organic substances (fuels, oils, etc.). This contrasts with what happens with many other 3D printable material, that can't even withstand contact with water.
Pro NinjaTek has published several case studies of filament applications
Several examples of how NinjaFlex was used in real-world applications are available. This is a great move from NinjaTek, since, even though it is useful to see how good a product is “on paper”, it’s even better to see examples of how it was actually used. All case studies are well documented and provide visual evidence of successful use.
Pro Can be used with virtually any standard 3D printer
You can use this filament with pretty much any standard 3D printer, since it's available in the two most commonly used diameters: 1.75 mm and 3.0 mm. The 3.0 mm spools are cheaper than the 1.75 mm ones. This is because it’s generally cheaper to produce 1 kg of 3.0 mm filament than 1 kg of 1.75 mm filament.
Pro Available in 10 different colors
This filament is available in 10 different colors, all of which are of very high quality and look rich.
Pro No heated printed bed required
This filament can be used with a printer without a heated bed, which is very convenient, since many 3D printers don't come with a heated bed by default or don't even have the option of adding one. Nevertheless, if your machine does have a heated bed, you can set it to 40ºC (recommended) and improve surface adhesion.
Cons
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.
Con Complicated to print without a direct-drive extruder
The filament itself is very flexible, which means that non-direct-drive extruders will have the issue of their bowden tubes clogging up. This is normally fixed by experimenting with the material feed rate and the extruder temperature (this tweaking process takes some time and effort). Double check if you have a direct-drive extruder before purchasing this filament, which avoids this bothersome process.
Con Unprotective filament packaging
The filament packaging doesn't provide adequate protection for the material, which is quite surprising, considering its high price. The spool is shipped simply sealed with a vacuum film (without a silica pack) contained in a simple box. There's no proper external packing to protect the filament from mechanical damage. If the film breaks, the filament becomes vulnerable to air humidity, absorbing water and, consequently, compromising the printing process.