In the world of 3D printing, choosing the right filament can make the difference between a project's success or failure. Two of the most popular options from SUNLU are standard PLA and the improved PLA+ (including the further developed PLA+ 2.0 variant). Whether you are a beginner printing decorative models or an advanced user creating functional parts, understanding the differences between PLA+ vs PLA is crucial for optimal results.
This detailed comparison covers material properties, print performance, real-world applications, pros and cons, and expert recommendations so you can find the best PLA filament for your needs.
What is SUNLU PLA Filament?
SUNLU PLA (Polylactic Acid) is a beginner-friendly, bio-based filament derived primarily from renewable resources such as corn starch. It is considered one of the easiest materials to print and is excellent for hobbyists, educators, and rapid prototyping.
Key features of SUNLU PLA:
- Excellent flow and low warping tendency
- Low printing temperatures (mostly 200–210 °C nozzle, 50–60 °C bed)
- Good dimensional accuracy (±0.05 mm)
- Glossy, smooth surface with vibrant colors
- Biodegradable and environmentally friendly
- Affordable price, often in the range of €15–20/kg
It is ideal for aesthetic prints such as figurines, prototypes, and non-functional decorative objects, but it can be brittle under mechanical stress.
What is SUNLU PLA+ (and PLA+ 2.0)?
SUNLU PLA+ is an improved version of standard PLA with additives that significantly increase mechanical properties. The newer PLA+ 2.0 goes a step further, offering even higher toughness.
Key improvements in PLA+:
- Higher impact resistance and toughness (often 2–3x stronger than normal PLA in bending and impact tests)
- Better layer adhesion and less brittleness
- Slightly improved flexibility before breaking
- Higher dimensional accuracy (±0.02–0.03 mm)
- Supports higher print speeds (up to 200+ mm/s for PLA+ 2.0)
- Matte or optimized surfaces in many colors
PLA+ retains the ease of processing of PLA while addressing its biggest weakness: brittleness.
Direct comparison: SUNLU PLA+ vs PLA
| Feature | SUNLU PLA | SUNLU PLA+ / PLA+ 2.0 | Winner |
|---|---|---|---|
| Strength & Durability | Basic (brittle) | High (2–3x tougher, better impact resistance) | PLA+ / 2.0 |
| Impact Resistance | Low | Medium to High | PLA+ |
| Flexibility | Low | Medium | PLA+ |
| Dimensional Accuracy | ±0.05 mm | ±0.02–0.03 mm | PLA+ |
| Print Speed | Up to approx. 200 mm/s | Up to 300+ mm/s (2.0) | PLA+ 2.0 |
| Ease of Printing | Very good (forgiving) | Very good (similar) | Tie |
| Heat Resistance | Similar (~50–60 °C) | Slightly better | Slight edge PLA+ |
| Surface Quality | Glossy, high-gloss | Often matte, smoother layers | Personal preference |
| Price | Cheaper (€15–20/kg) | Slightly higher (€17–22/kg) | PLA |
| Best Application | Decorative, prototypes | Functional parts, mechanical use | - |
Mechanical data (approximate values based on SUNLU PLA+ specifications):
- Tensile strength: approx. 58 MPa
- Impact strength: significantly higher than standard PLA
- Elongation at break: improved ductility
Print settings and performance
Both filaments are very compatible with most FDM printers. Here are optimized recommendations:
- Nozzle: 200–210 °C
- Bed: 50–60 °C
- Speed: 50–200 mm/s
- Cooling: 100% fan
- Nozzle: 205–215 °C (optimal is often 205–215 °C)
- Bed: 50–60 °C
- Speed: 50–300 mm/s (higher for 2.0)
- Cooling: 100% fan
Users praise SUNLU's neatly wound spools, which minimize tangles and clogs. PLA+ often provides better layer adhesion and fewer defects in functional prints.
Which filament should you choose?
Choose SUNLU PLA if:
- You are a beginner or printing decorative/cosmetic objects
- Budget is a major factor
- You prioritize ease of use, glossy surfaces, and environmental friendliness
- The parts are not subjected to high mechanical stress
Choose SUNLU PLA+ (or PLA+ 2.0) if:
- You need strong, durable functional parts (hooks, enclosures, mechanical components)
- You are printing at higher speeds or want better impact resistance
- You want to minimize brittleness and print errors
- You are moving from simple prototypes to practical applications
For many users, PLA+ 2.0 is the best all-rounder – it prints almost as easily as normal PLA but offers significantly better real-world performance.
User experience and tips
In forums and reviews, SUNLU PLA+ is frequently praised for its consistency, low stringing, and reliability on printers like Bambu Lab, Prusa, and others. Excellent results can be achieved with optimal settings.
Pro tips:
- Dry filaments before use (especially in high humidity)
- Test temperature towers and flow calibration
- Store filaments in a dry container
- Optimize infill patterns and wall thickness for maximum strength
Conclusion: The best PLA filament for you
SUNLU offers high-quality, affordable filaments in both categories. Standard PLA is the top choice for simple, beautiful prints, while PLA+ (especially 2.0) represents the superior best PLA filament in terms of performance and versatility for most users.
If your prints are intended for real-world use rather than just looking good, investing in PLA+ is worthwhile. The small price difference often pays for itself through fewer failed prints and more stable final results.
Ready for better prints? Explore the entire SUNLU PLA and PLA+ range for your next project. Happy printing!
What has your experience been with SUNLU filaments? Share your thoughts in the comments.
