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In the world of 3D printing, choosing the right filament can make or break your project. Two of the most popular options from SUNLU are their standard PLA and the upgraded PLA+ (including the enhanced PLA+ 2.0 variant). Whether you're a beginner printing decorative models or an advanced user creating functional parts, understanding the PLA+ vs PLA differences is key to achieving the best results.
This in-depth comparison covers material properties, print performance, real-world applications, pros and cons, and expert recommendations to help you decide on 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 like corn starch. It's widely regarded as one of the easiest materials to print with, making it ideal for hobbyists, educators, and rapid prototyping.
Key Characteristics of SUNLU PLA:
- Excellent flow and low warping
- Prints at lower temperatures (typically 200–210°C nozzle, 50–60°C bed)
- Good dimensional accuracy (±0.05 mm in many specs)
- Shiny, smooth finish with vibrant colors
- Biodegradable and environmentally friendlier option
- Affordable pricing, often in the $15–20/kg range
It's perfect for aesthetic prints like figurines, prototypes, and non-functional decorative items, but it can be brittle under stress.
What Is SUNLU PLA+ (and PLA+ 2.0)?
SUNLU PLA+ is an enhanced formulation of standard PLA with additives that improve mechanical performance. The newer PLA+ 2.0 takes this further, offering even greater toughness.
Key Improvements in PLA+:
- Higher impact resistance and toughness (often 2–3x stronger than standard PLA in bending/impact tests)
- Better layer adhesion and reduced brittleness
- Slightly improved flexibility before breaking
- Tighter dimensional accuracy (often ±0.02–0.03 mm)
- Supports higher print speeds (up to 200+ mm/s for PLA+ 2.0)
- Matte or enhanced surface options in many colors
PLA+ maintains much of PLA's ease of use while addressing its main weakness: fragility.
Head-to-Head Comparison: SUNLU PLA+ vs PLA
| Feature | SUNLU PLA | SUNLU PLA+ / PLA+ 2.0 | Winner |
|---|---|---|---|
| Strength & Durability | Basic (brittle) | High (2–3x tougher, better impact) | PLA+ / 2.0 |
| Impact Resistance | Low | Moderate to High | PLA+ |
| Flexibility | Low | Moderate | PLA+ |
| Dimensional Accuracy | ±0.05 mm | ±0.02–0.03 mm | PLA+ |
| Print Speed | Up to ~200 mm/s | Up to 200+ mm/s (2.0) | PLA+ 2.0 |
| Ease of Printing | Excellent (forgiving) | Excellent (similar) | Tie |
| Heat Resistance | Similar (~50–60°C) | Marginally better | Slight edge to PLA+ |
| Surface Finish | Shiny, glossy | Often matte, smoother layers | Depends on preference |
| Price | Lower ($15–20/kg) | Slightly higher ($17–22/kg) | PLA |
| Best For | Decorative, prototypes | Functional parts, mechanical use | - |
Mechanical Data Example (approximate from SUNLU PLA+ specs):
- Tensile Strength: ~58 MPa
- Impact Strength: Higher than standard PLA (up to 41 J/m or more in 2.0 variants)
- Elongation at Break: Improved ductility compared to basic PLA.
Print Settings and Performance
Both filaments are highly compatible with most FDM printers, but here are optimized recommendations:
- Nozzle: 200-210°C
- Bed: 50–60°C
- Speed: 50–200 mm/s
- Cooling: 100% fan
- Nozzle: 205-215℃ (205–215°C common sweet spot)
- Bed: 50–60°C
- Speed: 50–300 mm/s (higher with 2.0)
- Cooling: 100% fan
Users report excellent results with SUNLU's "Neatly Wound" spools, minimizing tangles and clogs. PLA+ often delivers superior layer bonding and fewer defects in functional prints.
Which One Should You Choose?
Choose SUNLU PLA if:
- You're a beginner or printing decorative/cosmetic items
- Budget is a primary concern
- You prioritize ease, vibrant glossy finishes, and environmental factors
- Projects don't require high mechanical stress (e.g., display models, toys)
Choose SUNLU PLA+ (or PLA+ 2.0) if:
- You need stronger, more durable functional parts (hooks, enclosures, mechanical components)
- Printing at higher speeds or want better impact resistance
- Reducing brittleness and post-print failures is important
- You're moving beyond basic prototypes into practical applications
For many users, PLA+ 2.0 strikes the best balance as the upgraded "all-rounder" in SUNLU's lineup — printing almost as easily as standard PLA while delivering significantly better real-world performance.
Real-User Feedback and Tips
Community feedback on forums and reviews highlights SUNLU PLA+ as a strong value option, often praised for consistency, low stringing, and reliability across Bambu Lab, Prusa, and other printers. Some note that dialing in settings perfectly yields exceptional results, though it can occasionally be slightly more sensitive than basic PLA.
Pro Tips:
- Dry filaments before use (especially in humid environments)
- Test prints with temperature towers and flow calibration
- Store in a dry box for consistent results
- For maximum strength, consider infill patterns and wall thickness optimizations
Final Verdict: The Best PLA Filament for You
SUNLU offers high-quality, affordable options in both categories. Standard PLA remains the go-to for simple, beautiful prints, while PLA+ (especially 2.0) is the superior choice for most users seeking the best PLA filament overall in terms of performance and versatility.
If your prints need to withstand real use rather than just look good, invest in PLA+. The modest price difference often pays off in fewer failed prints and stronger final products.
Ready to upgrade your prints? Explore SUNLU's full range of PLA and PLA+ filaments for your next project. Happy printing!
What are your experiences with SUNLU filaments? Share in the comments below.
