How to Print with colorFabb nGen_FLEX: A Guide to Durable, High-Quality Flexible 3D Printing
ColorFabb nGen_FLEX is a unique flexible filament designed for 3D printing applications that require both durability and flexibility. Made from a high-quality co-polyester, nGen_FLEX combines elasticity with strength, making it suitable for parts that need to withstand bending, stretching, and mechanical stress. With a Shore hardness of 95A, it’s firm enough to hold its shape under load, yet flexible enough to bend, twist, and recover—making it ideal for functional parts, wearables, and complex components.
In this guide, we’ll explore the best practices for printing with colorFabb nGen_FLEX, covering optimal print settings, tips, and troubleshooting techniques to ensure that your prints come out perfectly. Whether you’re a beginner or an experienced 3D printing enthusiast, these guidelines will help you make the most out of nGen_FLEX’s unique properties.
What is colorFabb nGen_FLEX Filament?
Key Properties of nGen_FLEX
nGen_FLEX is a flexible filament based on Eastman Amphora™ 3D Polymer, specifically designed for durability, flexibility, and ease of printing. It offers a unique balance of strength and elasticity, allowing for flexible yet sturdy 3D prints. nGen_FLEX is much easier to print than many other flexible materials like TPU, thanks to its minimal warping, excellent layer adhesion, and low tendency to string.
Key properties of colorFabb nGen_FLEX include:
- Shore Hardness of 95A: Provides a firm but flexible feel, suitable for functional parts that require some structural integrity while maintaining flexibility.
- High Impact Resistance: nGen_FLEX is highly durable, capable of withstanding mechanical stress and bending without tearing or breaking.
- Good Chemical Resistance: It resists exposure to oils, greases, and various chemicals, making it suitable for industrial applications.
- Low Warping: Like other nGen-based materials, nGen_FLEX has minimal warping and is easier to print than other flexible filaments.
Benefits of Using nGen_FLEX Filament
- Durable Flexibility: nGen_FLEX’s balanced flexibility and durability make it perfect for functional prints that need to be both flexible and strong.
- Easy to Print: Unlike many other flexible filaments, nGen_FLEX is relatively easy to handle on both direct drive and Bowden extruders.
- Ideal for Functional Parts: With its impact resistance and flexibility, nGen_FLEX is suitable for making parts that require repeated flexing or wear resistance.
- Versatile Applications: It can be used for both decorative and functional prints, including wearables, phone cases, gaskets, grips, and more.
Ideal Applications for nGen_FLEX
Thanks to its durability, flexibility, and ease of use, nGen_FLEX is well-suited for a wide range of applications, including:
- Wearables: Ideal for items like wristbands, watch straps, and other wearable accessories that benefit from a flexible material.
- Protective Cases: Custom phone cases, tablet covers, and other protective cases that need both durability and shock absorption.
- Industrial Parts: Functional parts like seals, gaskets, and grips that require resistance to mechanical stress and chemicals.
- Sporting Goods: Suitable for sports-related products that require elasticity, such as bike handle grips, shoe soles, and other equipment.
How to Print with colorFabb nGen_FLEX Filament
Printing with nGen_FLEX requires specific settings and techniques to bring out the best results. Below are recommended settings and tips for successfully printing with this flexible filament.
1. Recommended Printer Setup
Direct Drive Extruder
While it’s possible to print with nGen_FLEX on a Bowden setup, using a direct drive extruder is highly recommended. Direct drive extruders minimize the distance the filament travels from the drive gear to the hotend, reducing the likelihood of buckling or bending that can occur with flexible materials.
Nozzle Size
A 0.4 mm nozzle works well with nGen_FLEX. Larger nozzles, such as 0.6 mm, can be used to improve filament flow and minimize the chances of clogging, especially for thicker layers or faster prints.
Heated Bed
A heated bed is recommended to improve adhesion, especially for larger prints. Set the bed temperature between 80°C and 100°C to ensure the first layer adheres properly. If bed adhesion issues persist, try using a thin layer of glue stick or painter’s tape on the bed surface.
2. Optimal Temperature Settings
Extruder Temperature
The recommended extruder temperature range for nGen_FLEX is 230°C to 250°C. Start at 240°C and adjust based on your specific printer’s performance. If you notice poor layer adhesion, try increasing the temperature slightly.
Bed Temperature
Set the heated bed temperature to 80°C - 100°C. This helps the print adhere well to the bed, preventing warping and ensuring a stable base. If you still experience adhesion issues, applying an adhesive (like glue stick) can improve results.
3. Print Speed and Retraction Settings
Print Speed
nGen_FLEX, like most flexible filaments, should be printed at a slower speed to ensure consistent extrusion. A speed of 20-40 mm/s is recommended. Slower speeds allow the extruder to handle the filament better, reducing issues with buckling or under-extrusion.
Retraction Settings
Set a minimal retraction distance (1-2 mm) and a low retraction speed (10-20 mm/s) to prevent filament jams. Retraction can be challenging with flexible filaments, so avoid high retraction values as this can lead to clogging and extrusion issues. If stringing is an issue, try lowering the temperature slightly rather than increasing retraction.
4. Layer Height and Extrusion Settings
Layer Height
For nGen_FLEX, a layer height of 0.2 mm is a good starting point. This provides a balance between print quality and speed. For higher detail, reduce the layer height to 0.1 mm, but for larger parts, 0.3 mm can help save time.
Extrusion Multiplier (Flow Rate)
An extrusion multiplier of 100% generally works well for nGen_FLEX. If you notice under-extrusion or gaps between layers, increase the flow rate by 5%. However, avoid excessive flow rates, as they can lead to over-extrusion and reduced surface quality.
Troubleshooting Common Issues with nGen_FLEX
Issue: Poor Bed Adhesion
Solution: Ensure the bed is heated to 80°C - 100°C and that the surface is clean. Using a glue stick or painter’s tape on the bed can improve adhesion for flexible filaments. Additionally, ensure the first layer height is properly calibrated for good adhesion.
Issue: Stringing and Oozing
Solution: Flexible filaments can be prone to stringing. Try lowering the extruder temperature by a few degrees or reducing the print speed. Adjusting the retraction settings can also help, but avoid excessive retraction, as this can lead to filament jamming.
Issue: Under-Extrusion
Solution: Under-extrusion can result from improper extruder temperature or insufficient flow rate. Raise the extruder temperature slightly and check that the filament path is clear. Using a direct drive extruder instead of a Bowden setup can also improve extrusion with flexible filaments.
Issue: Clogging in the Extruder
Solution: Minimize retraction and use a larger nozzle size if clogging persists. Ensure the filament path is smooth and well-aligned. Also, reduce print speed, as printing too quickly can exacerbate extrusion issues with flexible filaments.
Tips for Achieving the Best Results with nGen_FLEX
- Store Filament Properly: nGen_FLEX is hygroscopic, meaning it absorbs moisture. Store it in a dry, sealed container with desiccant to prevent moisture absorption, which can lead to poor print quality.
- Use a Direct Drive Extruder: If possible, use a direct drive setup for better control over filament flow. This setup significantly improves handling with flexible filaments.
- Optimize Cooling: Use minimal cooling with nGen_FLEX, as too much fan speed can reduce layer adhesion. Start with 20-30% fan speed and adjust as needed based on the print quality.
- Adjust Print Speed and Retraction: Slow print speeds and minimal retraction settings are key to successful printing with flexible materials. Avoid high retraction distances and speeds to reduce the risk of filament jams.
Recommended Slicer Settings for colorFabb nGen_FLEX
For slicers like Cura, PrusaSlicer, or Simplify3D, start with these recommended settings and adjust based on your specific printer:
- Extruder Temperature: 230°C - 250°C
- Bed Temperature: 80°C - 100°C
- Print Speed: 20 - 40 mm/s
- Layer Height: 0.2 mm (adjust based on desired detail)
- Retraction Distance: 1 - 2 mm
- Retraction Speed: 10 - 20 mm/s
- Cooling Fan: 20-30%
ColorFabb nGen_FLEX is an excellent filament choice for creating flexible, durable, and functional 3D printed parts. By following these recommended settings and tips, you’ll be able to produce high-quality prints that showcase the unique properties of this flexible filament. Whether you’re printing wearables, phone cases, or industrial components, nGen_FLEX provides a reliable solution for applications that require both flexibility and strength. With the right approach, you can unlock the full potential of colorFabb nGen_FLEX for your 3D printing projects.
