Cnet 3d printer


Best 3D Printer for 2023

In this article:

  • What to consider before buying a 3D printer
  • Best 3D printers
  • Best 3D printers for beginners
  • Midrange 3D printers
  • High-end and professional 3D printers
  • 3D scanners
  • 3D printing FAQs 

It's a brand new year, and what better time to pick up a new hobby? In the last few years, 3D printing has become much more commonplace and accessible for hopeful hobbyists. If you like miniatures, figurines and cosplay, 3D printing is an excellent vocation to take on. And there are a ton of great 3D printers packed with the premium features you want, capable of fine detail, that you can buy and have in your home -- no trip to the library or store necessary.

Because 3D printing technology has come a long way in recent years, I've doubled down on being creative and gotten into 3D scanning and laser cutting as well, which lets you sculpt real-world designs from leather and wood. Advanced makers are also using resin machines that create amazingly detailed, high quality prints.  

Current 3D printers, which range from affordable (under $300) to high-end (over $4,000), are great gifts for a creative person in your life. Even better, they're great for you to print objects and craft your own personalized designs if you're looking to open an Etsy shop or something similar. If you're looking for some of the best 3D printer options on the market right now, I've done an in-depth analysis on 3D printers in all different price ranges from more affordable printer models to the highest cost varieties, to bring you a comprehensive scope on what makes a reliable printer and sound investment.

These models by Fotis Mint are extremely detailed.

James Bricknell/CNET

We've taken a deep dive into many of the best 3D printers available today. This list includes both small and large 3D printers, with attention paid to print speed, the size of the build plate, the cost of PLA filament, the kind of print head included and other important details. And once you've decided to take the plunge into additive manufacturing -- that's what 3D printing essentially is -- there's an FAQ below.

What to consider before buying a 3D printer


Purchasing your first 3D printer can be nerve-wracking but don't worry; we are here to help. There are a few main areas that you should consider when choosing the best 3D printer and we have them covered here.

What am I 3D printing?

When deciding on what 3D printer to buy you first have to know what type of things you want it to print. Resin 3D printing is good for highly detailed models such as character busts, dental work or tabletop miniatures. Even jewelry can be made using a resin 3D printer. 

For almost every other application, an FDM, aka filament, 3D printer is likely the best choice. Filament 3D printing is versatile in the types of material you can use and offers much larger build volumes to work on models. Cosplay armor and helmets, practical parts and large-scale models are best printed on an FDM printer.  

Read more: What Is 3D Printing?

What is build volume?

Build volume is the amount of space a printer has to produce a model. Often calculated in millimeters cubed, it is the combination of the width, height and depth that your printer's nozzle can reach. This is not always the same as the internal volume of a 3D printer because the wiring and other mechanical parts can get in the way of the nozzle, reducing the area available. 

Most FDM printers have a build area of around 220 by 220 by 250mm, though some of the best 3D printers have larger and a few of the best budget 3D printers have smaller. I think the 220 by 220mm build plate is a good size for starting out as it has room for large, practical pieces or several smaller models at once. 

Should I wait for a deal to buy a 3D printer?

3D printers are often available throughout the year at a discount price. Special days like Prime Day, Black Friday and Cyber Monday are great occasions to pick yourself up a new machine, but there are still plenty of deals to be had on a normal day. Make sure you stay fluid and choose your 3D printer deal based on the availability of the machine and what your research has told you is the best.

Best 3D printers

Dan Ackerman/CNET

Creality Ender-3 S1

Best 3D printer for beginners

I'd avoided Ender-3 printers for a long while, because they came in kit form and required many hours of assembly, setup and fine-tuning to use. For just a little more than the kit versions, the newer Ender-3 S1 comes nearly fully preassembled, and with high-end features like a direct drive extruder and self-leveling bed. 

Print quality even out-of-the-box was excellent, although a lot of that comes down to having good models to work from. I'd love it to have a touchscreen and Wi-Fi, but apart from those missing features, this is a great way to get polished results from a $400 3D printer. 

Read our Creality Ender-3 S1 review.  

$399 at Amazon

$340 at Creality3d

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Prusa Mk3S Plus

The standard candle for home 3D printing

No best 3D printer list is really complete without the Prusa MK3S Plus. For nearly a decade it has dominated the market and continues to be the go-to printer for anyone looking to make a business from 3D printing. It is fast and creates quality prints every time. I can count the number of print fails from MK3 on one hand, and I have had it for nearly seven years. If you have the $800, you should buy one of these. 

$800 at Prusa Research

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AnkerMake M5

Speed and quality combined

The AnkerMake M5 is a new breed of 3D printer. Its speed is unrivaled on this list and the quality of the end product is on par with anything I've seen. When you can get this quality level in a 3D print job in around half the time of its closest competitor, it's hard to recommend anything else for someone with the money to buy one.

Read our AnkerMake 5 review.

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Anycubic Vyper

Best for out-of-the-box printing

The Anycubic Vyper FDM printer attempts to be both an affordable 3D printer and easy to use. It's a tricky needle to thread. Plenty of 3D printers offer automatic bed leveling and calibration to make sure prints come out even and firmly anchored to the print bed. This, however, is the first time I've seen a 3D printer run its bed leveling once, with zero manual input from me, and be totally good to go. I printed a 3D test file from the included SD card within minutes of powering on, and I've never seen a first print from a 3D printer come out so perfectly.

Read our Anycubic Vyper review.

$319 at Anycubic

Anycubic

Anycubic Kobra Max

Best to make big projects easily

The Anycubic Kobra Max earned a 9 out of 10 in our recent review, in large part because it's one of the most enjoyable printers I've used in years. The build area is large enough to print entire helmets for cosplay, and the auto-bed-leveling system makes setting the machine up a breeze. The Kobra Max is the best choice for a large build area printer, bar none.

Read our Anycubic Kobra Max review. 

$529 at Anycubic

Best 3D printers for beginners

These 3D printers are excellent for anyone just starting out in 3D printing. Check out our expanded list of the best budget 3D printers for more in this category.

Prusa Research

Prusa Mini Plus

Small but mighty

The Mini Plus is one of the best small-footprint printers you can buy. It has everything you would expect from a Prusa machine: Auto bed leveling, crash detection and great print quality, all for under $450. Building it with my son gave us a lot of good insights into how a 3D printer works, and potentially how to fix one.

$429 at Prusa Research

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Anycubic Mono

Best inexpensive resin 3D printer

Resin printers are the next step up in rapid prototyping design technology when you want your printing to look as high quality as possible. Just be warned: The liquid resin is harder to work with, and it requires both good ventilation and a portable UV light to properly cure. This model is extremely popular with board game hobbyists who want to print pro-looking miniatures, and sometimes you'll see it fall in price. 

$200 at Amazon

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Midrange 3D printers

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Elegoo Saturn 2

The best resin experience right now

The Elegoo Saturn 2 is an almost perfect upgrade from the original Saturn. It is bigger and more powerful, with better quality prints than its predecessor and my No. 1 choice for a midrange resin 3D printer. If you are looking to print serious details or a lot of tiny models, this is simply the best choice.

$665 at Amazon

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Flashforge Adventurer 4

Best 3D printer for ease of use

The Flashforge Adventurer 3 has long been one of CNET's favorite midprice 3D printers. The updated Adventurer 4 brings a handful of iterative improvements that make for a winning evolution. The Adventurer 4 is a fully enclosed unit, which helps control the temperature and block drafts. The build area is 220 by 200 by 250mm, and it has a system for easily swapping out nozzles -- all good features to have in a mid-level to high-end printer. 

$849 at Amazon

$799 at Flashforge

High-end and professional 3D printers

Creality

Creality CR-30

Best for small biz or pro cosplayers

A word of warning; the CR-30 is not for the beginners out there. It is a complicated machine, and you will need some 3D-printing knowledge to really get the hang of it. It's also a very different beast, and instead of printing on a static-sized build plate, it uses a conveyor belt to create an "endless Z-axis." That lets you print very long things or lots of things over and over again.

If you are a cosplayer looking to make weapons or large armor pieces, the CR-30 gives you a lot of room to create. I've managed to print Squall's Gunblade from Final Fantasy VIII as well as the Whisper of the Worm from Destiny 2 (both were printed in two halves and attached together). It's great for small businesses looking to mass-produce small parts, and with just two CR-30s you could create a small empire on Etsy or Shopify. --James Bricknell

$982 at Amazon

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Glowforge 3D Laser Cutter

Best for woodworkers

I can't begin to tell you how much I love the Glowforge. Laser cutters can create projects from wood, leather, lucite and other materials, making it an interesting creation alternative to filament-based 3D printers. Even better, what would take a 3D printer hours to do takes just minutes in the Glowforge.

With it, I've created laser-etched LED lights, birch wood tool caddies, and even a three-tier box for my Nespresso sleeves. There's a robust community of makers creating and sharing files, but pretty much any line drawing you can create in something like Adobe Illustrator can be turned into a project. 

The software is all cloud-based, which adds a layer of complication (you need internet service to use it), but the ability to create amazing gifts and more from simple 0.125-inch or 0.25-inch cheap plywood is pretty empowering. 

See some of my laser cutter projects (and download my SVG files) here. 

$3,995 at Glowforge (Glowforge Basic)

$4,995 at Glowforge (Glowforge Plus)

3D scanners

Revopoint

Revopoint Pop 2

Incredible details

While the software has a pretty steep learning curve, the end result is extremely detailed. I've really enjoyed using the handheld version to scan larger models while the included turntable makes scanning smaller objects a breeze. If you are looking for a professional-grade scanner and can spend some time on the software, the Pop 2 is a great choice.

$689 at Amazon

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SOL Desktop Laser 3D Scanner

Best 3D scanner for easy replicas

Recreate pretty much anything by putting it on this 3D scanner, where a rotating base and built-in camera create a 360-degree copy, which is then editable in any 3D program and printable on your 3D printer. Simply scan the object, import the scan into your slicing software for cleanup, and print. The included software alerts you of next steps in the printing process with either sound or texts. Scan quality and print resolution are great, and setup is easy, although you might want to clean up your 3D model a bit in a 3D software app after.  

$799 at Amazon

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3D printing FAQs

What material should I use to print with?

Most home 3D printers use PLA or ABS plastic. Professional printers can use all sorts of materials, from metal to organic filament. Some printers use a liquid resin, which is much more difficult to handle. As a beginner, use PLA. It's nontoxic, made mostly of cornstarch and sugarcane, handles easily and is inexpensive. However, it's more sensitive to heat, so don't leave your 3D prints on the dashboard of a car on a hot day. 

Which brand of PLA is best?

Generally speaking, Hatchbox has never let me down and runs about $25 for a full 1kg spool on Amazon. Some of the printers I tested only accommodate narrower 0.5kg spools. In those cases, I sometimes used a larger Hatchbox roll with a separate spool-holder. Other times, I had good luck with AIO Robotics 0.5kg spools, which are a little more expensive, at $14 for 0. 5kg. Amazon Basics and Monoprice can also be good, but for any brand, weird colors like metallic or glow-in-the-dark filament can be hit-or-miss. Note that a 1kg roll prints a lot of stuff. 

What settings should I use?

Most 3D printers include or link to recommended software, which can handle converting 3D STL or other files into formats supported by the printer. Stick with the suggested presets to start, with one exception. I've started adding a raft, or bottom layer of filament, to nearly everything I print. It has cut down dramatically on prints that don't adhere to the bed properly, which is a common issue. If you continue to have problems, rub a standard glue stick on the print bed right before printing.

What are supports?

Your 3D models probably need some help to print properly, as these printers don't do well with big overhangs -- for example, an arm sticking out from a figure. Your 3D printer software can usually automatically calculate and add supports, meaning little stands that hold up all those sticking-out parts of the model. After the print is done, clip the supports off with micro cutters and file down any nubs or rough edges with hobby files. 

Where do I find things to print?

Thingiverse.com is a huge online repository of 3D files for anything and everything you can think of. Pokemon chess set? It's there. Dyson vacuum wall mount? You bet.

When you're ready to create your own designs, there are a ton of software packages to choose from, but it's easiest to start with the browser-based free TinkerCad app from Autodesk. 

Crazy things I've made on a 3D printer

+15 more See all photos

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Best Budget 3D Printer: 8 Great Printers at a Price You'll Love

It costs less than ever to get into 3D printing, with printers available for under $200. The catch is that these budget machines usually require some tweaking to get right. You'll save money, but it's a rough-and-tumble way to get started. The best budget 3D printers have a healthy balance between cost and usability so that's what we are looking at in this list.

3D printing -- or additive manufacturing to give it its scientific name -- has been around for a long time now. It's a fun way to create models that can be practical, or just for fun. You can print giant pieces of cosplay armor, or small statues to give as gifts. You can even buy a few printers, open your own Etsy store and make yourself a tidy profit.

These budget 3D printers all cost under $500 (though prices can drift a bit month to month), and some are better suited to beginners than others. Our list of picks for the best 3D printer overall covers a much wider range of choices, but these are excellent for getting started or for buying several at once!

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Elegoo Neptune 2

Keep it simple

The Elegoo is one of my favorite ultra-cheap printers. When testing it, I kept expecting it to fail and it just didn't. It produced amazing results for the price, and continues to do so every time I use it. It doesn't have auto bed leveling, but the Elegoo was easy to set up. And because it's based on the popular Ender 3, it has a lot of mods available to make it even better. 

$170 at Amazon

Prusa Research

Prusa Mini Plus

Small but mighty

The Mini Plus is one of the best small-footprint printers you can buy. It has everything you would expect from a Prusa machine: Auto bed leveling, crash detection and great print quality, all for under $450. Building it with my son gave us a lot of good insights into how a 3D printer works, and potentially how to fix one.

$429 at Prusa Research

Creality

Creality Ender 3

Community favorite

The Ender 3 is one of the bestselling 3D printers of all time. Its under-$200 price removes a huge barrier to entry for anyone looking to spend as little as possible for their first machine. 

Its popularity means there is a huge community of people to help you get it set up and working -- it's not exactly plug-and-play -- and you may need to spend a fair amount of time tweaking the Ender 3 to get it to print as well.

$189 at Amazon

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Anycubic

Anycubic Kobra Go

Entry level kit

The latest entry-level printer from Anycubic is surprisingly good. It comes in kit form, which gives you a chance to learn a little bit more about the machine. While that makes the setup more complicated, the printing is much easier with auto bed leveling, something I have never seen in a $200 printer. It makes everything easier, believe me.

If you are looking to get into 3D printing and want to learn what each of the parts does, this is a great way to find out.

$200 at Amazon

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Flashforge

Flashforge Finder 3

Excellent out of the box

I've recently been working with the Finder 3 and I'm impressed with the quality it was able to produce straight from the box. It is easy to set up and comes with a flexible build plate that you can replace the glass bed with. It makes it far easier to remove builds. 

On my CNET torture test, the Finder 3 coped really well with overhangs, as well as the points of the towers. Ringing was minimal, though it did struggle with bridging.

Overall, the Finder 3 is a great printer for the price. It's perfect for a teacher in the classroom as the enclosure makes it stable, and the slicer can control multiple printers at once via Wi-Fi.

$370 at Amazon

$390 at Flashforge

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Creality Ender 3 S1

Direct drive with advanced features

As Dan Ackerman said in his review of the Creality Ender 3 S1 "At $399, the S1 version of the Ender-3 is about $100 more than older versions but includes so many upgrades and quality of life features that it qualifies as a great beginner-friendly, plug-and-play printer. "

It's also a great budget-friendly Direct Drive printer, making it easier to use for materials such as TPU.

$349 at Amazon

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Resin 3D printers for beginners


Most beginner printers use a plastic filament to create models, but there are plenty of affordable resin 3D printers, too. Liquid resin is a little more difficult to use than standard 3D printing material and requires safety equipment. But it also produces amazingly detailed results.

Elegoo

Elegoo Mars 3

The best starter resin printer

This small resin printer is Elegoo's latest model in its popular Mars line. Because of the 4K monochrome LCD (these printers use light from an LCD to cure liquid resin) it can print much faster than older printers. The level of detail on models is something that standard 3D printing simply can't reproduce. At this price, the Elegoo Mars 3 is the best resin printer for the money. 

$274 at Amazon

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Anycubic Mono X

When you need it bigger

This is expensive for a budget printer, but well worth it if you want a large enough print area to make something special. I have been using this as my main resin printer and it can handle anything I throw at it, from a D&D miniature army to highly detailed sculptures.

$450 at Amazon

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Frequently asked questions


What material should I use to print with?

Most home 3D printers use PLA or ABS plastic. Professional printers can use all sorts of materials, from metal to organic filament. Some printers use a liquid resin, which is much more difficult to handle but offers sharper details. As a beginner, use PLA. It's non-toxic, made mostly of cornstarch and sugarcane, handles easily, and is inexpensive. However, it's more sensitive to heat, so don't leave your 3D prints on the dashboard of a car on a hot day. 

What settings should I use?

Most 3D printers include or link to recommended software, which can handle converting 3D STL or other files into formats supported by the printer. Stick with the suggested presets to start, with one exception. I've started adding a raft, or bottom layer of filament, to nearly everything I print. It has cut down dramatically on prints that don't adhere to the bed properly, which is a common issue. If you continue to have problems, rub a standard glue stick on the print bed right before printing.

What are supports?

Your 3D models probably need some help to print properly, as these printers don't do well with big overhangs -- for example, an arm sticking out from a figure. Your 3D printer software can usually automatically calculate and add supports, meaning little stands that hold up all those sticking-out parts of the model. After the print is done, clip the supports off with micro cutters and file down any nubs or rough edges with hobby files. 

How we test


Testing 3D printers is an in-depth process. Printers often don't use the same materials, or even the same process to create models. I test SLA, 3D printers that use resin and light to print, and FDM, printers that melt plastic onto a plate. Each has a unique methodology. Core qualifiers I look at include:

  • Hardware quality
  • Ease of setup
  • Bundled software 
  • Appearance and accuracy of prints
  • Repairability
  • Company and community support

A key test print, representing the (now old) CNET logo, is used to assess how a printer bridges gaps, creates accurate shapes and deals with overhangs. It even has little towers to help measure how well the 3D printer deals with temperature ranges.  

James Bricknell/CNET

Testing resin requires different criteria so I use the Ameralabs standard test -- printing out a small resin model that looks like a tiny town. This helps determine how accurate the printer is, how it deals with small parts and how well the UV exposure works at different points in the model. 

Many other anecdotal test prints, using different 3D models, are also run on each printer to test the longevity of the parts and how well the machine copes with various shapes.

For the other criteria, I research the company to see how well it responds to support queries from customers and how easy it is to order replacement parts and install them yourself. Kits (printers that come only semi-assembled) are judged by how long, and how difficult, the assembly process is. 

3D printed bionic prostheses from Unlimited Tomorrow

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The American company Unlimited Tomorrow brought to the market 3D printed bionic prosthetic hands with a custom design. Artificial hands with six grips are created from individual 3D scans of patients and are offered for eight thousand dollars.

Unlimited Tomorrow is the brainchild of a young entrepreneur named Easton LaChapelle, who built his first remote-controlled robotic arm at the age of fourteen. Three years later, the now high school student was invited to the traditional school science fair at the White House after winning a competition at the Intel International Science and Technology Fair, and another year later, Easton joined forces with British designer and almost namesake Christopher Chappelle and launched his own startup, collecting the initial funding on the Kickstarter crowdfunding site.

Easton is now twenty-four years old and leads a company that offers a ready-made commercial product - functional 3D printed prostheses. The idea of ​​a startup was born back in his school years, when during one of the fairs, his attention was attracted by a girl who was carefully studying his booth with a robot. The girl was missing her right arm, and a rather simple electromechanical prosthesis with one grip replaced the limb. As it turned out, this miracle of technology cost parents eighty thousand dollars.

TrueLimb prostheses can hardly be called cheap either, but they are much more affordable in terms of affordability: Unlimited Tomorrow offers its products for $7,995 or in installments with monthly payments of $259, working directly with patients, without intermediaries, while the closest analogues cost about twenty thousand even with good health insurance. In addition, these hands are much more functional, being able to perform six different grips with individual finger control, and much more attractive to look at than many of the analogues.

The hand size, color and detailing is chosen by the future user, who only needs to go through the 3D scanning procedure. Scanning can be performed at home: the company sends the necessary equipment and instructions to selected candidates. Then the company's engineers bring the 3D scans up to standard and use the resulting digital models to print components on a color 3D printer from Hewlett Packard using Multi Jet Fusion technology. The minimum age of a candidate for prosthetics is seven years.

For now, the company is focusing on prosthetic arms, but is considering making artificial lower limbs and even exoskeletons. The most well-known Russian manufacturer of custom prostheses using 3D printing technologies is the Moscow company Motorika, which offers low-cost mechanical traction prostheses "Kibi", myoelectric prostheses "Indy" with one grip, and also working on bionic artificial hands "Manifesto" with fourteen grips. . Customers can count on compensation through the Social Security Fund. This summer, Motorika received the CE marking for all its products and announced its intention to enter the European market.

CNET edition of the Unlimited Tomorrow project:

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TrueLimb prostheses, 3D printed bionic prostheses from Unlimited Tomorrow, Multitard 3D printed technology Jet Fusion, 3D scanning, 3D printing technologies, Motorika

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How a 3D printer works and what it is for - Code magazine

Over the past couple of years, there has been a lot of news about someone printing something on a 3D printer:

  • hearing aid,
  • products from milk,
  • residential building,
  • robotic fingers,
  • brain implants,
  • statue of David 1 mm high,
  • ready-made electronic devices.

Let's see how this technology works, what its limitations are, and whether it has a future.

Why you need a 3D printer

3D printers print three-dimensional things from plastic or other materials. They can be used at home or in production. For example, here is what you can 3D print:

Battery case. Hinged LED lamp. Minecraft style lamp. Model of an old castle.

How it works

Usually a 3D printer uses special plastic to print. It comes in the form of powder, liquid resin or plastic wire in coils. It is from this material that the printed part will consist.

Further, roughly speaking, the process looks like this:

  • this plastic is either applied using a moving nozzle;
  • or "baked" with a laser;
  • or the excess is cut out of the mass of the finished material using a movable cutter (but this is more like turning and is often not attributed to 3D printing).

Material takes the shape you want, layer by layer. When all layers are passed, the detail turns out.

Fast 3D Printing with Moving Nozzle:

Due to the fact that the printer needs to constantly heat the plastic, 3D printers do not print very quickly: a part the size of a phone can take 15-20 minutes. The speed also depends on the thickness of the layer: the thicker the layer, the faster the print. But with a large layer thickness, the part may turn out to be sloppy: layers will be visible:

The thinner the layer, the more even the surface is when printed.

Printing technologies

3D printing is very much needed in industry and industrial design, so there is a whole zoo of printing technologies, each with its own advantages and disadvantages.

Stereolithography . Instead of plastic, a special resin is used here, which hardens in the light. The detail is also formed in layers, but the layers themselves are almost invisible - the resin fills the relief and the detail seems to be a single whole even from a very close distance.

Polymer synthesis (SLS) . This type of printing uses powder, which is then baked with a laser beam. Since the laser beam can be focused anywhere with the desired accuracy, very complex models with high detail can be obtained in this way of printing:

Polyjet. The peculiarity of this technology is that it can print objects simultaneously from different materials. This allows you to create almost any thing of the most complex shape, which immediately have the desired properties. You can even print sneakers that you can wear on this printer:

What can be printed

Anything can be printed on a 3D printer if you have the right material for printing, a finished model and a large enough printer.

Prototypes. Often, before starting production, a company needs to understand how comfortable a thing will turn out to be in use. In order not to launch a line for the sake of one product, it is printed on a 3D printer and they look at what needs to be changed or finalized. On such prototypes, you can notice, for example, that the buttons turned out to be too small and it would be inconvenient to press them, or that the buttons turned out to be very far from the fingers and you will need to reach them specially.

Parts and parts. Sometimes it is difficult or almost impossible to find a spare part for a tool: the manufacturer does not produce them or the model has been discontinued for a long time. In this case, you can find a three-dimensional model of the desired part on the Internet or draw it yourself in the editor, so that you can then send it to print.

Medicine. 3D printing is actively used in medicine to create new joints, tissues and treat patients. The difference from traditional printing is that instead of plastic, they print with special “living” solutions that interact with each other and behave like real organs and tissues. Thanks to this technology, it is now easy to print a joint that a surgeon can put on a person instead of a damaged one.

Hobbies and modeling. It is easy to print various miniatures, collectible figurines and models on a 3D printer.

Manufacture of other robots. 3D printers do not yet know how to produce servos and microprocessors, but they already know how to print bodies and frames of robots.

Houses and buildings. We take hefty rails with motors and controllers. We install a movable nozzle, on which you can supply a building mixture (concrete or polymers). You can print the walls of buildings. Unlike traditional brick, panel and block construction technologies, the shape of the walls and the building as a whole can be any. The foundation, floors and roof are not yet printed, but this is for now.

Imagine: sending fifty 3D printers on a movable base to Mars. For a year, each of them prints another 100 printers. Then all these 5,000 printers disperse around Mars and begin to build the first colony. While they are building, we order furniture from Ikea, arrange delivery, and just in time for delivery, our robots will finish printing everything. Apple trees on Mars are unlikely to bloom, but five-story buildings can.

Criticisms and issues

❌ Slow and no guarantees: printing is quite slow, not accurate enough. A huge problem in amateur printers is marriage. For example, a part can peel off the substrate right during printing, and hell will happen. Or the motors will decalibrate, and the nozzle will begin to miss the right places.

❌ Low efficiency: To print a 10 x 10 cm part, you need a printer that is at least 50 x 50 cm, which will cost several hundred dollars.

❌ Not the strongest materials: 3D printing has so far been limited to plastics and resins. There are separate printing technologies based on metal powder, but if you need a steel part, you don’t need a 3D printer, but a normal turner and machine tool.


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