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Prusament PLA Jet Black 1kg

What can you expect?

Prusament PLA is our own in-house made filament. The whole manufacturing process is closely monitored and tested - we guarantee ±0.02mm precision (± 0,03 for blends) and highly-consistent colors. You can inspect parameters of every spool we made at Check the sample spool!

Manufactured In-House By Josef Prusa

We were not satisfied with the quality of filaments on the market. So we decided to make our own! Prusa Research is the only 3D printer manufacturer with its own filament production.

Premium-Grade Materials And Thorough Testing

The whole manufacturing process is closely monitored and tested – string diameter, color consistency, and mechanical properties – to make sure that every spool is perfect.

± 0.02 mm Manufacturing Guaranteed Precision

We believe the industry standard of 0.05 mm isn’t sufficient for perfect 3D printing. Instead, we guarantee ±0.02mm precision (± 0,03 for blends) and highly-consistent colors in our filaments.

High Quality You Can Check Yourself

We are the only manufacturer that gives the option to inspect parameters of every filament spool. Scan a QR code on the spool to see all details online (check the sample spool).


Read more about Prusament in the article at or at!

About PLA

PLA melts at a relatively low temperature of about 175 degrees Celsius. Unlike so-called thermoset materials, PLA can be heated past its melting point multiple times with very little degradation. It’s a hard material, but that also means it’s somewhat brittle, and once it breaks, it likes to shatter. Only this material is proven for 50 microns layer height.

However, PLA is not a perfect material and, just like every other plastic, has some disadvantages. The low melting temperature also means low-temperature resistance. Parts start to lose mechanical strength at temperatures over 60 °C.

The combination of being low in UV and temperature resistance means that it’s not ideal for outdoor use. Also, PLA is only soluble in chemicals like chloroform or hot benzene. So when connecting multiple pieces, you’re better off using just glue.

Even though PLA is on its own food safe, we do not recommend repeatedly drinking or eating from your 3D prints. Because of the small fractures on the print surface, bacteria can build up in there over time. You can prevent this by applying a food-safe coating. When post-processing PLA, it’s better to use wet sanding. Without water, you'll quickly start heating the plastic by friction, which will cause it to soften and make it hard to keep sanding.

Printing Setup

Nozzle 215 °C 
Heatbed 50-60 °C 

Basic Attributes

Easy to print Brittle
Can print tiny parts Low temperature resistance
Can print huge objects Difficult post-processing
Hard and tough    
Low warping    


This PLA is made in-house by Prusa Research.

1.75 mm filament is manufactured with precision of ± 0.02 mm (±0.03 for blends)

Before printing, make sure the surface of heatbed is clean as described in 3D Printing Handbook.

To dry the filament, please follow the instructions in our article


8 reviews
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Dailous Michael
Dailous Michael2 months ago

When it prints right, it's absolutely gorgeous! That said, Prusa Jet Black PLA isn't like any of Prusa's other PLA's I've worked with. The Jet Black is extremely oozy at 215° C (the default slicer profile setting), but I found a setting of 210° C is best (at least for my printer), so creating a new profile took care of that issue. It also doesn't stick well to the PEI steel sheet (as another reviewer commented). It took a bit of playing around, but I found that using some glue stick rub into my sheet with an iso-propyl alcohol soaked cloth worked best. My prints stick to the bed and my prints are exactly as I'd expect, beautiful.

Jaech Kristian2 months ago

I echo Savage John's experience. This batch of Jet Black -- or maybe the formula now -- is just not right. I can do dozens of prints just fine on other filament, both before and after trying this filament, but the Jet Black is just nooooooo good. Globs and won't stick. Pops off during the first layer. I've gone through half the roll trying to get it to work with a billion bed cleanings and dozens of different settings. And when I switch to any old filament afterwards? It will work just fine. This one is just a big no.

Savage John2 months ago

ID: 1b069a6e33 24.2.2022 This filament simply won't stick to the bed - prints simply peel off after a few layers have been printed. Opened the reel just yesterday and have tried it with easy designs on two Prusa beds, a) smooth (thoroughly cleaned with detergent and acetone) and brand-new powder-coated on my MK3S. Also tried variety of bed and nozzle temperatures. Absolutely failed to print the parts I wanted with this material despite hours of experimentation. Yes the first layer calibration was fine too. Reverted to 3D Printz PLA Matt Black and back in business - 5 of six prints flawlessly printed so far and sixth is looking perfect so far too. I'm not a novice and have designed and made hundreds of prints with my wonderful Prusa printer. So impressed with that and care that Prusa put into their products generally that I thought I couldn't go wrong with the filament. How wrong - impressive reels and dimensional QA, but the material itself is useless. This will be the first time I have discarded a nearly full reel of filament.

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