The "strength" of PLA filament all depends on how much the filament is expanded. But at the same time, different filament brands offer a different percentage of expansion range.
Here are the strongest pla filaments you can buy in 2023:
- Best Adhesion: SUNLU PLA Plus 3D Filament SL-BK
- Best For Smooth Surface: eSUN PLA+175H1A
- Best For High-Speed Printing: SUNLU 3D Printer Filament PLA
- Best Silk PLA: CC3D SILKPLA009
- Best Rainbow PLA: BLIFE Bbrainbow
- Best Glitter PLA: ZIRO 1.75mm
- Best Flexible PLA: Flashforge PLA Flexible 1.75 mm
|7 Strongest PLA Filaments|
|SUNLU PLA Plus 3D Filament SL-BK|
Best For Smooth Surface
Best For High-Speed Printing
|SUNLU 3D Printer Filament PLA|
Best Silk PLA
Best Rainbow PLA
Best Glitter PLA
Best Flexible PLA
|Flashforge PLA Flexible 1.75 mm|
After printing, sandpaper can come in handy for improving the appearance and finishing of printed objects.
Best Adhesion: SUNLU PLA Plus 3D Filament SL-BK
- Great adhesion
- 10x stronger than standard PLA filaments
- More beautiful prints – brighter colors
- A bit stringy
The SUNLU PLA Plus 3D Filament SL-BK offers better adhesion to itself and the heated bed than other PLA filament spools, making it one of our favorites.
This premium filament prints well with excellent precision, great consistency, and minimal stringing or tangling.
It is also 10x stronger than standard PLA filaments and comes in brighter and more beautiful colors. The spool size is also perfect for hanging on most 3D printers.
|SUNLU PLA Plus 3D Filament SL-BK Specifications|
410°F - 455°F
Heat Bed Temperature
131°F - 149°F
10x stronger than standard PLA filaments
If you are seeking for the best adhesion PLA filament, then the SUNLU PLA Plus 3D Filament SL-BK is a great choice.
Best For Smooth Surface: eSUN PLA+175H1A
- Create high-quality prints with buttery-smooth surfaces - enhanced thermal stability & better layer bonding
- Little odor
- Minimal warping
- Not true to colors
Looking for a top-quality PLA filament that creates high-quality printouts with smoother surfaces? The eSUN PLA+175H1A is your best bet.
With its incredible strength, enhanced thermal stability, and better layer bonding, this industrial-grade PLA+ filament helps you achieve buttery-smooth printing with high rigidity.
Besides, you won’t have to spend any time calibrating temperatures and flow rates.
You can be sure your prints will hold up beautifully even at higher temperatures.
|eSUN PLA+175H1A Specifications|
+/- 0.03 mm
205C - 225C
Heat Bed Temperature
enhanced thermal stability & better layer bonding
Buy the eSUN PLA+175H1A if you want a strong PLA filament that can help you achieve high-rigidity prints with smooth surfaces.
Best For High-Speed Printing: SUNLU 3D Printer Filament PLA
- Suitable for high-speed printing - 50-100mm/s print speed
- No tangles or mess – a self-developed neat winding device
- Not for thick prints
The SUNLU 3D Printer Filament PLA is the perfect choice for fast printing.
While other PLA filament spools have sprint speed ranges of 40-60 mm/s, this model is much faster, from 50 to 100 mm/s. Besides, it is precision extruded to minimize warping and avoid clogging up your 3D printer.
It's also neatly wound on a spool, making the filament easier to use with less waste. So, you can be sure there will be no tangles or mess.
|SUNLU 3D Printer Filament PLA Specifications|
Heat Bed Temperature
50-100mm/s print speed
a self-developed neat winding device
We appreciate the SUNLU 3D Printer Filament PLA for its incredible high-speed printing ability.
Best Silk PLA: CC3D SILKPLA009
- Create sleek 3D prints with no polishing required – high glossiness
- Eye-catching – color-changing effects
- The color changing is random
If you are seeking a special way to add some flair to your 3D printing projects, then consider the CC3D SILKPLA009.
This PLA filament separates itself from the rest for its superior glossiness, which results in a sleek and eye-catching finish with no polishing needed.
Besides, it features a beautiful gradually changing color effect for beautiful and unique prints with high details.
|CC3D SILKPLA009 Specifications|
First layer: 15-20mm/s
Other layers: 40-60 mm/s
The CC3D SILKPLA009 are an excellent choice as the best silk PLA filament
Best Rainbow PLA: BLIFE Bbrainbow
- Best rainbow PLA – color-changing effects with more colors & brighter shades
- Detailed prints - 100% new raw material
- Easy to print - tangle-free spool
- Not as adhesive as our other picks
- A bit darker than in the pictures
If you want a rainbow PLA filament but with brighter shades, we highly recommend the BLIFE Bbrainbow.
This premium-quality filament creates more colorful prints than other counterparts we tested, and has a great precise filament diameter tolerance for more consistent results.
Besides, it is made from 100% new raw material and is precision engineered to produce stunningly detailed prints.
The tangle-free spool is easy to print with and comes vacuum sealed in a moisture-resistant bag to keep it dry and working perfectly for a long time.
|BLIFE Bbrainbow Specifications|
215±10°C (401℉ - 437℉)
Heat Bed Temperature
50°C - 60°C (122℉ - 140℉)
color-changing effects with more colors & brighter shades
100% new raw material
The BLIFE Bbrainbow can deliver vibrant rainbow prints with that perfect color-changing effects. So, it’s not exaggerating to say this is the best rainbow PLA filament.
Best Glitter PLA: ZIRO 1.75mm
- Glittering effects - premium glitter particles
- Keep the filament always fresh - vacuum-sealed packaging
- A bit pricey
With just one touch, you can add a little sparkle and shine to all your prints with ZIRO 1.75mm.
Made with high-quality PLA plastic and premium glitter, this 1.75mm filament is perfect for adding a bit of fun and personality to your prints. It delivers semi-transparent and glittery, which looks great. Plus, there are many color options to choose from.
The dimensional accuracy and consistency ensure that your projects come out looking great every time, while the vacuum-sealed packaging helps keep your filament fresh and free of tangles or clogs.
|ZIRO 1.75mm Specifications|
Heat Bed Temperature
premium glitter particles
Made from sparkling particles, the ZIRO 1.75mm is the best glitter PLA filament on the market.
Best Flexible PLA: Flashforge PLA Flexible 1.75 mm
- 4x more stretchable than the original length - a patented PLA formula
- Suit Bowden extruders and direct drive extruders
- It should say semi transparent color in the description
For those in need of a flexible and reliable 3D printer filament, look no further than the Flashforge PLA Flexible 1.75 mm.
With a patented PLA formula, this filament is much more flexible than traditional options while still being easier to use. It's 4x more stretchable than the original length, which is perfect for projects like decorations, belts, phone cases, and more.
This filament is designed to be compatible with both Bowden extruders and direct drive extruders, making it a great option for any type of 3D printer.
|Flashforge PLA Flexible 1.75 mm Specifications|
Heat Bed Temperature
a patented PLA formula
The Flashforge PLA Flexible 1.75 mm is the best flexible PLA of all the options we tested.
How To Choose The Strongest PLA Filament?
Types of PLA Filament
When it comes to PLA filament, there are two main types: standard PLA and high-temperature PLA.
Standard PLA is the most common type of PLA, and it works well for a wide range of applications. However, for applications where strength and durability are key, high-temperature PLA is the best choice.
High-temperature PLA is made with tougher resin that can withstand higher temperatures, making it perfect for applications like mechanical parts and tools.
When choosing a PLA filament, it is also important to consider the print temperature.
The print temperature forPLA filament should be between 190°C and 230°C.
If the print temperature is too low, the filament will not flow properly and the resulting print will be weak and porous. If the print temperature is too high, the filament will degrade quickly and the resulting print will be brittle.
Experiment with different print temperatures to find the sweet spot for your specific filament and printer setup.
There are a number of different factors that can affect the impact resistance of PLA filament.
The type of plastic used in the filament can have an effect, as can the additives that are added to the filament. In general, PLA filaments with a higher percentage of crystallinity tend to have better impact resistance.
If you want PLA filament with higher impact resistance, pick one made from reinforcement fibers. These fibers can provide additional strength and stiffness to 3D printed parts, and they can help to absorb impact energy. Common reinforcement fibers include carbon fiber and Kevlar.
Which Brands Make The Strongest PLA Filament?
SUNLU is a professional 3D printing company founded in 2013. They deliver high-quality 3D printers, as well as a variety of durable filaments, to give customers the best possible experience.
eSUN is one of the world's most well-known 3D printing companies. The company spends a great amount of time on research and development, production and sales, and encourages the in-depth development of the industry. eSUN has mastered production technology for many 3D printing materials to meet the demands of customers.
ZIRO is a manufacturer of 3D printers and filaments. They produce 17 types of filament, including both PLA and ABS, that feature high precision, excellent printing performance, and compatible with most FDM 3D printers.
The difference between ZIRO and other filament manufacturers is that they offer direct sales to their customers. You can enjoy cutting out the middleman for more savings!
Is ABS or PLA stronger?
ABS is stronger than PLA. ABS is stiff, impact-resistant, and durable. but tends to crack in cold weather.
Does PLA melt in the sun?
Yes, the glass transition temperature of PLA is 60-65°C so if you paint it black or leave it in a car under the sun. it will melt
Can you leave PLA filament in a 3D printer?
You can leave your filament in a 3D printer if the environment is controlled, not too humid or hot.
Does PLA get brittle over time?
PLA is hygroscopic which means that they absorb moisture in the air and get brittle after months. Especially when exposed to humid weather.
Will PLA dissolve in water?
PLA will not dissolve in water, but in the long term, water could speed up the decomposing process of the material.
PLA filaments are available in a wide range of colors and types. There's no one "right" PLA filament, but there are certain criteria you can look for to make sure you're choosing the strongest PLA filament for your needs.
In general, you'll want to look for a PLA filament with a high melting point and good UV resistance. You should also consider the filament's flexibility and impact resistance.
With so many options on the market, it can be tough to choose the right PLA filament for your project. But if you keep these factors in mind, you'll be sure to find a strong PLA filament that meets your needs.