SUNLU or YOOPAI? 3d Printing Filaments Compared in 2026
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When you compare SUNLU vs YOOPAI 3d printing filament, you find two reliable PLA options for FDM printers. Both brands use 1.75mm filament with a tight dimensional accuracy of ±0.02mm. This consistency helps ensure smooth feeding and stable extrusion across most machines. The main difference lies in the package size and color strategy. SUNLU offers a large 1kg spool in solid black, while YOOPAI provides a bundle of small 250g rainbow spools for colorful projects.
Key differences
| Aspect | SUNLU 1.75mm Black PLA Filament 1kg | YOOPAI Rainbow PLA 250g Bundle |
|---|---|---|
| Net Weight | 1KG | 250g per spool (bundle) |
| Color Type | Solid Black | Rainbow |
| Filament Diameter | 1.75mm | 1.75mm |
| Dimensional Accuracy | +/- 0.02mm | ±0.02mm |
| Max Print Speed | 100mm/s | not listed |
Which one should you choose?
Choose SUNLU 1.75mm Black PLA Filament 1kg if
- You need a large single spool for extended solid-color printing.
- You want to print at speeds up to 100mm/s.
- You prefer standard 1kg spools that fit most external holders.
Choose YOOPAI Rainbow PLA 250g Bundle if
- You want to explore multiple colors without buying large spools.
- You are making small, multi-colored models or test prints.
- You prefer compact 250g spools for easier storage and color changes.
Verdict: Choose the SUNLU filament if you need a large volume of solid black material for long prints. Pick the YOOPAI bundle if you want to experiment with rainbow effects on smaller projects. Both offer precise 1.75mm tolerances for reliable performance on your printer.
SUNLU vs YOOPAI Filament Specs
Print volume
SUNLU offers a standard 1KG spool, providing a large volume of material for extended projects. YOOPAI supplies a bundle of four 250g mini spools. This smaller format is ideal for testing new colors or printing small accents. You get less total filament with YOOPAI in a single purchase, but the variety of colors is higher. SUNLU is better if you need a single large run of black filament. YOOPAI suits you if you want to experiment with multiple shades without buying full 1KG rolls.
Dimensional accuracy
Both brands list a filament diameter of 1.75mm with a tolerance of ±0.02mm. This tight specification is crucial for consistent extrusion and avoiding clogs. SUNLU states this accuracy ensures wide compatibility with most FDM printers. YOOPAI also highlights that this precision supports stable flow and clean details from the first layer to the last. Since both meet the same standard, neither has a technical advantage here. You can expect similar feeding reliability from either product on your printer.
Spool compatibility
SUNLU uses a large spool with an 8.00-inch diameter and a 2.20-inch hub hole. This size fits many standard FDM printers. YOOPAI uses smaller spools measuring 140mm in diameter and 36mm in width, with a 53mm center hole. These dimensions are designed for external or top-mounted holders. YOOPAI explicitly mentions that Bambu Lab AMS users may need a specific adapter for their system. SUNLU does not mention AMS compatibility. If you use an AMS, YOOPAI requires extra preparation.
Color variety
SUNLU is listed here as a solid black option, though variations include white, red, and wood. YOOPAI is a rainbow PLA bundle. YOOPAI is designed for multi-color projects, vases, and figurines where color progression is key. SUNLU is better for uniform, solid-colored parts. YOOPAI helps you explore more colors in small quantities. SUNLU provides a consistent single color for professional or functional prints. Your choice depends on whether you need uniform black or a multi-color effect.
Print settings
SUNLU provides specific recommended settings: a nozzle temperature of 200-230°C, a bed temperature of 50-65°C, and a speed of 50-100mm/s. This guidance helps beginners achieve good results quickly. YOOPAI does not list specific temperature or speed recommendations in the provided data. You must rely on general PLA settings for YOOPAI. SUNLU offers more direct guidance for optimal printing parameters. This makes SUNLU slightly more user-friendly for those who want exact starting points.
Winding quality
SUNLU highlights its self-developed neat winding device, claiming a 100% neat rate to reduce tangles and jams. This ensures smoother feeding. YOOPAI also emphasizes precision winding for reliable feeding and reduced snags. Both brands focus on preventing mid-print interruptions through careful spooling. Neither provides a measurable metric that clearly beats the other. Both aim for a smooth printing experience by minimizing tangles. You can expect good mechanical performance from both regarding filament handling.
Which SUNLU or YOOPAI filament should you buy
Users needing large single-color prints
You should choose the SUNLU 1KG spool if you plan to print larger objects or need a continuous run of black material. Its 1.75mm diameter with ±0.02mm accuracy ensures consistent feeding. The 1kg weight provides enough filament for substantial projects without frequent spool changes. This standard size fits most FDM printers with external or top-mounted holders.
Printers wanting multi-color small projects
Choose the YOOPAI bundle if you want to experiment with different shades for small figurines or decorative items. The four 250g mini spools allow quick color transitions. This format helps you test new colors without buying full 1kg rolls. The consistent 1.75mm diameter supports stable extrusion, making it easy to create detailed, multi-hued models on your FDM printer.
Beginners testing new color options
The YOOPAI bundle is ideal for beginners who want to try various colors without a large commitment. Each 250g spool is manageable and easy to store. You can print small test pieces or accents to see how the rainbow effect looks. The ±0.02mm dimensional accuracy ensures reliable performance, reducing the risk of jams and helping you learn printing techniques safely.
The products compared
SUNLU 1.75mm Black PLA Filament 1kg
Best for: standard-speed monochrome FDM 3D printing
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Max Print Speed
- 100mm/s
- Dimensional Accuracy
- ±0.02mm
- Printing Technology
- FDM
View on Amazon: SUNLU 1.75mm Black PLA Filament 1kg Affiliate link
This is a 1kg spool of 1.75mm PLA filament wound for standard FDM 3D printers. It features a +/- 0.02mm dimensional accuracy, an extrusion temperature range of 200°C to 230°C, and a recommended print speed of 50 to 100mm/s. You will find it suitable for everyday monochrome prototyping and functional parts that require standard PLA print settings.
Pros
- Dimensional accuracy held to +/- 0.02mm
- 100% neat spool winding reduces tangling
- Full 1kg net weight spool
- Compatible with 50°C to 65°C bed temperatures
Cons
- Maximum recommended print speed capped at 100mm/s
- Single solid black color rather than a multi-color gradient
Good fit if
- You need a standard 1kg black PLA spool with +/- 0.02mm tolerance.
- You print at moderate speeds between 50mm/s and 100mm/s.
- You use a spool mount compatible with a 2.20-inch hub diameter.
Skip if
- You operate high-speed 3D printers above 100mm/s.
- You want multi-color transition effects in a single print.
Verdict: SUNLU 1kg Black PLA Filament 1.75mm fits makers needing dependable standard-speed monochrome printing with tight +/- 0.02mm diameter tolerances. It suits everyday prototyping where extrusion speeds above 100mm/s are not required.
YOOPAI Rainbow PLA 250g Bundle
Best for: small multi-color prints and testing
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 250g
- Dimensional Accuracy
- ±0.02mm
- Color Printing
- Multi-Color
- Target Audience
- Beginners
View on Amazon: YOOPAI Rainbow PLA 250g Bundle Affiliate link
This YOOPAI bundle offers four 250g spools of 1.75mm PLA filament with a rainbow color effect. The ±0.02mm dimensional accuracy supports consistent extrusion and stable flow for clean layers. You get multiple colors in compact sizes, which helps reduce waste on small prints or test models. The spools fit most standard FDM printers with external or top-mounted holders. This setup is ideal for creative projects where you want to switch shades frequently without managing large, single-color rolls.
Pros
- Includes four 250g spools for varied color options
- 1.75mm diameter with ±0.02mm accuracy for stable flow
- Rainbow color effect suits small models and figurines
- Compact spool size reduces unused filament waste
Cons
- 250g spools are smaller than standard 1kg rolls
- Requires adapters for Bambu Lab AMS systems
- Rainbow effect may not suit solid-color projects
Good fit if
- You print small models or test parts often
- You want multiple colors without large spool storage
- You use standard FDM printers with open holders
Skip if
- You need long continuous runs of single color
- You use Bambu Lab AMS without adapters
- You prefer standard 1kg spool sizes
Verdict: YOOPAI Rainbow PLA 1.75mm 250g Spool is a practical option for makers who value color variety and compact storage over bulk volume. It fits users who print small, detailed items and want to avoid leftover filament from large single-color spools.
Specifications side by side
| Spec | SUNLU 1.75mm Black PLA Filament 1kg | YOOPAI Rainbow PLA 250g Bundle |
|---|---|---|
| Material Type | PLA | PLA |
| Filament Diameter | 1.75mm | 1.75mm |
| Net Weight | 1kg | 250g |
| Max Print Speed | 100mm/s | not stated |
| Dimensional Accuracy | ±0.02mm | ±0.02mm |
| Printing Technology | FDM | not stated |
| Color Printing | not stated | Multi-Color |
| Compatible Material | PLA | PLA |
| Target Audience | not stated | Beginners |
| Color | Black | Pla Bundle-250gx4-2230028 |
| Size | 1KG | 3d filament |
| Color Effect | not stated | Rainbow |
| Surface Finish | Smooth | not stated |
| Dimensions | 8.66 × 8.66 × 3.15 inches | not stated |
| Weight | 2.21 pounds | 2.6 pounds |
| Model | 3D Printer Filament PLA Filament 1.75mm | 2230028 |
Frequently asked questions
Is SUNLU PLA filament suitable for everyday 3D printing projects?
Yes, the SUNLU 1.75mm Black PLA is a practical choice for general needs. It offers consistent black prints with standard PLA properties. You get a 1KG spool that fits most FDM printers. The tight dimensional accuracy ensures smooth feeding and reliable extrusion for your daily builds.
What is the best filament for testing new colors?
The YOOPAI Rainbow PLA 250g Bundle is ideal for testing. It provides four 250g mini spools with varied color effects. This compact format helps you avoid leftover material from large single-color spools. It is perfect for makers who print small, detailed items and want to experiment with different hues.
How much filament do you get with the SUNLU option?
You receive a single 1KG spool of black PLA filament. This size provides a large volume of material for extended projects. The spool measures 8.66 inches in width and height, with a height of 3.15 inches. It weighs 2.21 pounds, offering a substantial amount of print material.
Does the YOOPAI bundle include multiple colors?
Yes, the YOOPAI bundle features a rainbow color effect. It includes four mini spools, each weighing 250g. This setup allows you to print small accents or test various colors without committing to a full large spool. It is designed for users who value color variety and compact storage.
Are both filaments compatible with standard FDM printers?
Both options are compatible with standard FDM printers. They use 1.75mm diameter filament, which is the industry standard. The SUNLU black PLA and YOOPAI rainbow PLA both maintain tight dimensional accuracy. This consistency helps ensure smooth feeding and stable extrusion across most common 3D printing machines.
Which filament is better for large single-color prints?
Choose the SUNLU 1KG spool for large single-color prints. It provides a continuous run of black material, which is efficient for bigger objects. The 1.75mm diameter with high accuracy ensures consistent feeding. You will not need to swap spools mid-print, reducing the risk of layer shifts or gaps.
What are the physical dimensions of the SUNLU spool?
The SUNLU spool measures 8.66 inches in width and length. Its height is 3.15 inches. The total weight of the package is 2.21 pounds. These dimensions allow it to fit on most standard printer beds and filament holders. The 1KG size provides ample material for substantial projects.