SUNLU PLA and PLA+ 3D filaments: Is it Worth it?

Easy-to-use budget 3D filaments for projects around house

SUNLU PLA+ and PLA review

When I show my 3D-printed objects to friends, the most common question is, “How much does the filament cost?” SUNLU is known for its affordable 3D printing materials. In this review, we tested their PLA and PLA+ filaments. To check the quality and usability, I printed various things that I needed in the house.

PLA (Polylactic Acid) and PLA+ (also known as enhanced PLA, PLA Pro, or PLA Plus) are two popular 3D printing filaments used in Fused Deposition Modeling (FDM) 3D printing processes. While both are produced from biodegradable renewable resources (like cornstarch or sugarcane) and have similar base characteristics, there are some differences between them:

  • [Strength and Durability] PLA+ is often marketed as a stronger, more durable version of standard PLA. It typically has enhanced mechanical properties, including increased tensile strength and impact resistance. This makes it less brittle and more suitable for functional parts.
  • [Flexibility] PLA+ can be slightly more flexible compared to standard PLA. It may have a higher tolerance for bending and deformation before breaking.
  • [Surface Finish] PLA+ may provide a smoother and shinier surface finish compared to standard PLA. This can make it more aesthetically pleasing for some applications.
  • [Printing temperatures] While PLA has a low printing temperature, usually around 190-220°C, PLA+ requires slightly higher temperatures, typically around 200-230°C. A lower temperature means less energy consumed.
  • [Pricing] PLA+ filaments are slightly more expensive than standard PLA due to their improved properties.

SUNLU PLA PLUS and PLA filaments

SUNLU PLA vs SUNLU PLA+ comparison table

Features PLA PLA+
Dimensional accuracy +0.05 mm +0.03 mm
Mechanical performance Low High
High temp resistant No Yes
High-resolution No Yes
Environmentally friendly Yes No
Cost $15 to 20 per kg $17 to 21 per kg

SUNLU PLA and PLA+ hands-on review

Disclosure: I received these PLA and PLA+ filaments as part of a product review collaboration with SUNLU. Product specs and quality may vary according to the manufacturer’s reliability, so I cannot guarantee that you will get the material that performs the same as seen in my article.

SUNLU 3D printing products

Together with the S2 FilaDryer, SUNLU also sent me two spools of 3D filaments, a white PLA and a grey PLA+. Both filaments were packed in the same type of recycled cardboard box. Elegoo still uses plastic spools instead of environment-friendly cardboard. As it should be, the filaments were in airtight vacuum bags with small silica gel sachets inside. PLA and PLA Plus tend to absorb water, meaning they can become brittle over time if stored in a humid environment. To avoid this, you should keep the spool in the original package for the long term.

SUNLU filament unboxing

A label on the bobbin shows the production serial number, material color, type, diameter, and printing nozzle temperature. An unopened spool weighs 1164 grams. The diameter tolerance of the PLA is +/- 0.05 mm, and the PLA Plus is +/- 0.03 mm. During my tests, I had no issues with spool tangling or unwinding. The accuracy of the filament thickness is crucial for good printing results. The extrusion width will also change if the filament’s thickness changes within a spool, resulting in an unsightly 3D print.

PLA PLUS installed on Neptune 3 Pro printer

Pricing, availability, and color options

When I published my review, the SUNLU PLA Plus 3D filament was available starting from $13.99/kg with sixty color options. The standard PLA is 1$ ($12.99/kg) cheaper per kg and is available in 26 colors. There are also available 6KG bundles for a more friendly price.

PLA filament color options

Sunlu PLA Plus and standard PLA: Printability

In terms of printing, PLA and PLA+ are known for being easy to use. They have a low melting point, so it doesn’t necessarily require a heated build plate. They also don’t produce toxic fumes when heated, making it a safer option for indoor use.

SUNLU PLA+ test objects

Firstly, I tested the grey PLA+ filament by printing various things that I needed in the house. I recently purchased some Ikea shelving systems that needed to be painted. The 3D-printed pyramids helped to stack the freshly painted shelves. Homogenization of the paint with a mixer before use is recommended to obtain a nice uniform color. My wife lost the narrow hose of the vacuum cleaner, and she was happy when I printed a new, even longer one. The drill dust collector that works with home vacuum cleaners is also a great accessory for DIY-ers.

Phone holder printed with SUNLU PLA

With stock settings, I had no printing issues with none of the test objects. Using the SUNLU PLA+ with my Neptune 3 Pro machine was easy. I also printed a temperature tower (5 °C  steps) to test the ideal print temperature for the Sunlu PLA+ filament. The best results were obtained in the range 210-215 °C.

PLA filament test

With the standard white PLA, I had some stringing and over-extrusion problems. It also stuck to the platform more weakly than the Plus one.

For all of the above, I used only a third of the filament roll, so I 3D printed a lot of useful stuff without leaving the house at the cost of a few dollars.

PLA Plus filament parameters

SUNLU PLA Plus: Technical specifications

Mechanical proprieties
Dimensional Accuracy +/- 0.03mm
Density 1.23 (g/cm3 at 23˚C)
Elongation at Break 3.6 (%) at 50mm
Young’s Modulus 3570 (MPa)
Tensile Strength 58 (MPa)
Impact Strength 41 (J/m)
3D printing parameters
Extruder Temperature 205-215℃
Plate material Flexible Magnetic Plate
Surface Treatment of Plate No required
Plate temperature 50-60℃
Printing speed 50~100 mm/s
Bottom Valve Separation Distance 0.4-0.6
Retraction Distance 5mm

SUNLU PLA filament parameters

SUNLU Standard PLA: Technical specifications

Mechanical proprieties
Dimensional Accuracy +/- 0.05mm
Density 1.23 (g/cm3 at 23˚C)
Elongation at Break 3.1 (%) at 50mm
Young’s Modulus 3500 (MPa)
Tensile Strength 61 (MPa)
Impact Strength 31 (J/m)
3D printing parameters
Extruder Temperature 200-210℃
Plate material Flexible Magnetic Plate
Surface Treatment of Plate No required
Plate temperature 50-60℃
Printing speed 50~100 mm/s
Bottom Valve Separation Distance 0.4-0.6
Retraction Distance 5mm
​Overall Value
Ease Of Printing
Color options
sunlu-pla-and-pla-3d-filaments-is-it-worth-itSo, $13.99 PLA+ filament – is it worth buying? Based on my experience with it so far I’d have to say YES, it definitely is! The SUNLU PLA+ was easy to use on both of of my 3D machines. The printing characteristics have proven to be very good, with almost no stringing and the nozzle remains free and never clogs. Instead, with the standard PLA I had problems with one of my printers. I tested many temperature settings but didn't stick to the glass sheet.


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