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PLA is the easiest material to use to make awesome things.
<div content="LIST ITEM" superlative description="
Polylactic acid, or PLA, is the most common 3D printing filament, and it’s the easiest to use. Unlike most plastics, it’s made from corn starches so it’s nontoxic and, in theory, compostable, though it takes an industrial composter to do it. PLA uses a fairly low heat — between 190 and 215 degrees Celsius (374 and 419 degrees Fahrenheit) — to melt the plastic for extrusion, so it is the safest of the filaments. Almost every FDM 3D printer in the world can print PLA.
PLA pros
PLA cons
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Build PLA from MatterHackers is great for projects that require finishing (sanding, painting and so on). I have about 12 rolls of it in my workshop and use it for large projects, including my Mandalorian armor or cosplay swords. The dimensional accuracy — how consistent the diameter is along the length of the roll — is good, though nothing mind-blowing. It’s well within the sweet zone.
Post-processing is where Build Series PLA shines. It is simple to sand and holds paint well, as long as you use a good primer and filler first. Like all PLA, it holds together well using superglue and even takes putty and Bondo without complaint.
<div content="LIST ITEM" superlative="Best metallic-looking filament" description="
The color of this PLA is hard to describe, but it is beautiful. It has a purple-blue-green hue and looks like metal that’s been heated up. Right now, it’s probably my favorite-looking filament.
It’s also easy to print with, and because of the shifting colors, it hides layer lines well. If you’re looking for a dark filament that you aren’t painting over, I’d pick up a few rolls of this today.
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The bigger your 3D printer gets, the more you need one continuous roll of filament to make parts. Sure, you can trust the filament runout sensor on your machine and hope that multiple rolls of filament look the same color, but often the machines fail, or the color changes. Overture is helping to solve that issue with large rolls of filament. The company has several of its most popular colors available in 2 and 3 kilogram rolls so you can stock up, ready for your huge, ambitious projects.
<div content="LIST ITEM" superlative="Best sparkly filament" description="
I really enjoy the color of this PLA from Inland. It prints very well and the shimmer from the gold/red highlights hides any layer lines after it has printed. Beautiful colored filament always makes me happy, and this is one of my favorites.
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With the advent of ultra-fast 3D printers, companies including Elegoo have started to create materials that work better at high speeds. Rapid PLA Plus works extremely well at high speeds due to its high fluidity when melted. It printed very well on several of my fastest machines and sands very well if you are looking to finish your prints with paint.
<div content="LIST ITEM" superlative="Best color shift" description="
Ataraxia Art already makes excellent PLA and flexible PLA, but its new range of tri-color filament is some of its best yet. Tri-color uses three colored filaments along its width to create a beautiful shimmering effect as you move the model, so it’s perfect for projects you aren’t going to be painting.
This PLA comes in four different color combinations and is one of my favorite filaments to use.
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For projects you can show off without paint, PolyTerra might be for you. The colors are vivid, and because they are matte, you don’t lose details in the reflections like with shiny filament.
PolyTerra also comes in recycled cardboard reels, and the creator, Polymaker, will plant a tree in the area where the roll was bought to help offset the cardboard used. This filament is still plastic, but it helps my conscience to use this one.
<div content="LIST ITEM" superlative="Bouncy bouncy" description="
In an article about this flexible PLA, I explained how, although this isn’t technically PLA, it does print much easier than TPU, a more common flexible filament. I used it to print an amazing Mandalorian Blacksmith helmet for my 4-year-old. She can’t break it because it’s so bouncy.
This isn’t for newbies, though. It took a lot of trial and error to get the setting for my 3D printer right, and because it is so soft, the accuracy can be pretty wonky. But for something that’s different from normal PLA, it’s worth checking out.
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Flexible PLA gives you a lot of scope to try projects you never would have before.
Pros:
Easier to print than TPU
Pantone color codes
Flexible and fun
Cons:
Harder to print on Bowden style 3D printers (Ender 3 et. al)
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Flexible PLA gives you a lot of scope to try projects you never would have before.
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Flexible PLA gives you a lot of scope to try projects you never would have before.
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I’ve been meaning to buy some of this beautiful filament for some time now, and I’m really happy I did. The color is almost exactly the same as mint chocolate chip ice cream, and the tiny flecks of marble color enhance the look even more. It prints great, with a nice glossy finish, and I found printing it at a higher temperature brings out that gloss really well.
Aside from the print quality, I love the way it makes me feel. The color just makes me happy and reminds me of days at the beach with my kids. It’s gorgeous.
<div content="X – LIST ITEM" superlative="So many colors!" description="
Rainbow filament tends to transition between colors very slowly. This means you often get only one or two colors per model. Creality’s latest rainbow filament has a much shorter transition, so you get a much nicer rainbow effect across your models. It looks great on this amazing dragon from Fotis Mint.
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Inland makes good filament across the board, and its ABS is no different. I’ve never had issues with the dimensions, and the final product has consistent layer lines. Sanding Inland ABS is a joy as the material can be wet-sanded to a smooth finish.
<div content="LIST ITEM" superlative="Bright and beautiful" description="
Fillamentum is one of my favorite ABS makers. The colors are always so vibrant, and while it costs a little more than the competition, it keeps that vibrancy even after the model is finished printing. If you’re looking for ABS that you don’t need to paint, Fillamentum is a great place to start.
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Overture PETG is a favorite because it comes in an economical two-pack, making it ideal for multiple or larger jobs. I’ve used a lot of Overture products, including PETG and PLA, and they always print well. I once printed an 11-foot-long Masamune sword using Overture and it came out looking awesome.
<div content="LIST ITEM" superlative="Glorious colors" description="
The Pro series filament from MatterHackers is a much nicer product than a lot of standard PETG. Yes, it costs a little more, but it’s designed to help reduce some of the issues that filament suffers from. It reduces shrinkage, so the part you make is as close to the part you designed as possible. This is a great material for those who make 3D-printed models for a living rather than a hobby.
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This US-made PETG has an excellent glassy look that is hard to achieve in melted plastic. The aqua color is subtle and gives the appearance of a stained glass window when printed at the high end of its temperature scale.
Printing with it was easy, though the roll is a little big for printers like the Bambu Lab X1, which has an enclosed filament system.
TPU is a flexible material that can make cool rubbery models. Most people use it to 3D print phone cases, but more serious modelers often use it to create connectors or flexible hinges to other materials. It can be a difficult material to work with and is best used on a direct-drive 3D printer such as the Prusa Mk4, and it’s worth noting that TPU does not work with the AMS system from Bambu Lab.
<div content="LIST ITEM" superlative="For everyday use" description="
MatterHackers Build Series Materials perfectly balance usability and cost. Yes, I’ve had failures with the Build Series, but once you get it dialed into your printer, you can make dozens of fun, springy models.
I like to use it to make fun toys for my kid’s preschool — they can be thrown around without breaking into small, sharp pieces.
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There is so much to love about this TPU from Inland. It’s colorful, and the rainbow transitions look beautiful. It’s flexible and can be used as a phone case. And it’s almost translucent, so it has a glassy look. It is great for projects that need to stand out.
<div content="LIST ITEM" superlative="Get a good glow on" description="
Glow-in-the-dark filament normally comes in a standard "radioactive" green, but this beautiful roll transitions through multiple colors. It’s simply gorgeous.
It’s also worthwhile to buy some replacement brass nozzles for your printer. Glow-in-the-dark filament can chew them up pretty quickly because the glowing material is more abrasive than standard colors.
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Not only does this cool filament glow, but it glows different colors, too.
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Not only does this filament glow, but it glows different colors too! It’s so darn cool.
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Not only does this filament glow, but it glows different colors too! It’s so darn cool.
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This filament isn’t the cheapest, but it is fascinating. This PLA has dense iron powder mixed into it so it is magnetic, and it can rust if you spray it with salt and vinegar. Being able to easily print any model as normal and then rust it allows you to create some brilliant effects.
Testing focuses on a few details: Dimensional accuracy, winding precision, and printing quality. Winding precision is a visual test where I check to make sure the filament works well on the spool, without any crossovers that can cause snags while printing.
Print quality is done using a CNET calibration test that I use to test all of the 3D printers I review. When checking for filament quality, I’m looking for noticeable roughness and missing filament where moisture or other contaminants have interrupted the process of melting and cooling.
Dimensional accuracy is perhaps the most important test as it measures the consistency of filament. As you move along, the filament changes in diameter and will cause the 3D printer to over- or under-extrude filament. This creates noticeable scarring in your model, or worse, complete failure. You want the material to have the same diameter the whole way through.
To measure the accuracy, I take a 5-meter (16.4-foot) piece of filament from the beginning, middle and end of the roll and measure the diameter at four equally spaced points. I then add up all of those measurements and divide the total by 12 — the total number of measurements taken — to give me an average across the roll. Most modern printers use 1.75mm filament, so you want the filament to be as close to that as possible.
Great filament has a variance of plus or minus 0.02mm, good filament is plus or minus 0.03mm and rough filament is anything plus or minus 0.05mm. All of the filaments we have recommended here are at least 0.03mm on average.
