SUNLU TPU 3D Printer Filament 1.75mm,Highly Elastic 90A TPU Filament,Flexible 3D Filament for Fast Printing,Dimensional Accuracy +/- 0.03mm,Suitable for Most FDM 3D Printers.1KG (Black).
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AI Verdict
This 90A Shore hardness TPU filament with +/- 0.03mm diameter accuracy is for FDM users needing flexible, wear-resistant prints at 40 mm/s.
This 90A TPU filament is a strong fit for users needing flexible, durable prints that can withstand wear and impact. Its specified 1.75mm diameter with +/- 0.03mm accuracy and strong layer adhesion contribute to reliable print outcomes.
If you need even faster print speeds for flexible materials, look for TPU filaments specifically rated for higher Shore hardness (e.g., 95A) and higher recommended print velocities.
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Pros
- Items printed with this 90A Shore hardness TPU withstand collisions due to its elasticity.
- The filament maintains a consistent 1.75mm diameter with +/- 0.03mm accuracy, leading to reliable extrusion.
- It offers strong layer adhesion, creating smooth surfaces without needing additional adhesives.
- The filament is described as 100% bubble-free, preventing weak spots and surface imperfections in prints.
- It exhibits aging resistance, contributing to the longevity of printed objects.
- The material is non-toxic and odorless during printing, making it suitable for various environments.
Cons
- Flexible filaments like this 90A TPU are susceptible to moisture absorption, impacting print quality if not stored correctly.
- Printing flexible filaments can be difficult for beginners and may require specific printer setups, especially Bowden extruders.
- The recommended print speed of 40 mm/s is slower than some other TPU variants, extending print times for larger objects.
- While described as 'fast printing' in the title, the recommended 40mm/s speed is not exceptionally fast compared to some other TPU filaments that can print at 80-120mm/s.
Dimension Scores
The filament boasts a dimensional accuracy of +/- 0.03mm and is described as 100% bubble-free, ensuring consistent extrusion and print quality.
It features excellent layer adhesion and is non-toxic and odorless, but flexible filaments generally require more careful printer calibration and moisture control than rigid materials.
The 90A Shore hardness provides a balance of flexibility and durability suitable for a range of functional and elastic applications.
Printed items are wear-resistant, have a degree of elasticity to withstand collisions, and the filament itself has good aging resistance.
Best For
- creating functional parts requiring flexibility and impact absorption, like drone parts or protective cases
- hobbyists and professionals needing wear-resistant components for prototypes or end-use items
- projects where consistent diameter and strong layer bonding are critical for print success
Not Recommended For
- users unwilling to manage filament moisture control with airtight storage and desiccant
- beginners without experience tuning printer settings for flexible materials
- applications requiring print speeds exceeding 40 mm/s for TPU
Watch Out For
- Moisture exposure significantly degrades print quality; users report needing airtight containers with silica gel packs for consistent results.
- Some users with Bowden extruder setups may find feeding this flexible filament difficult, potentially leading to clogs or inconsistent extrusion.
- Despite the 'fast printing' claim, the recommended speed for this 90A TPU is 40 mm/s, which is slower than the 80-120 mm/s achievable with some 95A TPU filaments.
Full Specifications
| ASIN | B0FB95ZMCM |
| Size | 90A TPU |
| Brand | SUNLU |
| Color | 90a 1000g Tpu Black |
| Material | 3D Printer Filament, Thermoplastic Polyurethane |
| Item Weight | 2.2 pounds |
| Manufacturer | SUNLU |
| Item Diameter | 1.75 Millimeters |
| Material Type | 3D Printer Filament, Thermoplastic Polyurethane |
| Number of Items | 1 |
| Item model number | Flexible 90A TPU Filament |
| Package Dimensions | 7.87 x 7.87 x 2.76 inches |
| Manufacturer Part Number | SLUS-TPU-BK-90A-1KG |
What Buyers Say
Users frequently highlight this SUNLU 90A TPU's consistent diameter and its ability to produce prints with strong layer adhesion and smooth finishes. Many appreciate its bubble-free extrusion, which prevents common flexible filament issues. The filament's elasticity and wear resistance are consistently praised for functional parts. However, the need for careful moisture management is a recurring theme, with users emphasizing proper storage to maintain print quality.
“Okay, so this 90A TPU stuff actually prints pretty well for flexible parts, like way better than some other brands I tried. Just make sure you keep it DRY or it's gonna be a stringy mess, trust me.”
Common Praise
- Consistent 1.75mm diameter with minimal variation, leading to smooth extrusion.
- Strong interlayer adhesion, resulting in durable and cohesive prints.
- Prints are 100% bubble-free, avoiding weak points and surface defects.
- High elasticity and wear resistance make it suitable for parts that need to bend or absorb impact.
- Odorless printing experience, making it more pleasant for indoor use.
Common Complaints
- Requires diligent moisture control; users report print quality issues if not stored in dry conditions.
- Printing flexible filaments can be challenging on some FDM printers, particularly those with Bowden extruders, leading to feeding problems.
- The recommended 40 mm/s print speed is slower than some users might expect for 'fast printing,' extending job times.
Ownership Tips
- Even if it comes vacuum-sealed, re-drying the filament before first use can improve initial print quality.
- A direct-drive extruder setup makes printing this flexible filament significantly easier and more consistent than a Bowden setup.
- Experimenting with retraction settings is crucial to minimize stringing, a common issue with flexible materials.
- The elasticity means prints can be stretched considerably without breaking, which is great for stress-absorbing components.
- Small, intricate details can be challenging to print without careful calibration due to the material's flexibility.
Frequently Asked Questions
What are the recommended printing temperatures for this filament?
SUNLU recommends a nozzle temperature between 220-240°C and a bed temperature of 50-60°C for optimal results.
Is this TPU filament compatible with most 3D printers?
Yes, its 1.75mm diameter with a +/- 0.03mm dimensional accuracy makes it compatible with almost all FDM 3D printers.
How flexible is this filament?
This filament has a Shore hardness of 90A, meaning it's highly elastic and wear-resistant, allowing printed items to withstand collisions.
Does this filament absorb moisture easily?
Like most TPU filaments, it can absorb moisture, which can affect print quality. Proper storage in airtight containers with desiccant is advised.
Can I print quickly with this filament?
The recommended printing speed is 40 mm/s. While the product is marketed for 'fast printing,' this speed is moderate for TPU and may be slower than some other filament types or harder TPU variants.
Buying Guide
When you're looking at TPU filament, you're basically buying rubber for your 3D printer. You need to think about how squishy you want your final part to be and how fast your printer can handle it. This material is awesome for things that need to bend, flex, or take a hit without breaking, but it's not as easy to print as standard PLA. You'll need to pay attention to your printer's settings and keep the filament dry.
Shore Hardness (90A)
This number tells you how hard or soft the TPU is. 90A is like a firm rubber eraser – flexible but still holds its shape well. Lower numbers (like 85A) are softer, higher numbers (like 95A) are stiffer, closer to a car tire. This 90A is a good middle ground for flexibility and printability.
Dimensional Accuracy (+/- 0.03mm)
This is how consistent the filament's thickness is along its entire length. Imagine trying to draw a perfect line with a pencil that keeps changing thickness – your drawing would be messy. Good dimensional accuracy means your printer gets a steady flow of material, leading to smoother, more reliable prints without clogs or under-extrusion.
Recommended Print Speed (40 mm/s)
Flexible filaments are tricky to push through your printer's hot end, so they generally print slower than rigid plastics. 40 mm/s is a common, manageable speed for 90A TPU. Trying to print much faster can lead to clogs, stringing, or poor layer adhesion because the material can't melt and flow fast enough.
Alternatives
If you need a stiffer, faster-printing flexible material, look for TPU with a Shore hardness of 95A or higher. If you require extreme softness and stretch, search for TPU with a lower Shore hardness, but be prepared for more challenging printing.
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