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Polar 3D — 3D Printer Review

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This education-focused 3D printer offers a good range of features and excellent software for multiple users, but there are better printers for home users.

Tom's Guide Verdict

This education-focused 3D printer offers a good range of features and excellent software for multiple users, but there are better printers for home users.

Pros
  • +

    Excellent software for group use

  • +

    Easy to manage prints and users

  • +

    Affordable, especially for schools

Cons
  • -

    No heated print bed makes it difficult to use ABS

  • -

    Primitive built-in modeling tools lack some key features

  • -

    Occasional Wi-Fi glitches

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Today's best Polar 3D deals

No price information

For more information visit their website

Aimed at the education market, the $799 Polar 3D takes an unusual approach to 3D printing, with a rotating print bed. It offers a good range of features, including support for multiple types of filament and a webcam to monitor prints.

The real high point is the software, which lets multiple users build and load 3D models, and then queue them to a printer under one person's control. Educational users get a price break: The company is offering the printer for $599 to schools, teachers and students.

Usually, 3D printers produce objects by moving the printhead left to right, front to back and up and down over a static, square print bed (or sometimes moving the printhead left to right and up and down, and the print bed front to back). In contrast, the Polar 3D moves the printhead up and down, moves the print bed front to back and also spins the print bed around.

It sounds odd, but by combining the motions, the Polar 3D can reach every part of the large 8-inch-diameter print bed without requiring a large overhanging mechanism. That allows a small printer to produce a sizable print volume of a little more than 400 cubic inches (8 inches high, and 6 inches in diameter) — nearly double the print area of the much larger LulzBot Mini, which manages 223.2 cubic inches (6 x 6 x 6.2 inches).

The lack of a heated print bed means that you have to use different methods to get the print to stick.

The Polar 3D has a simple look; it's composed of a black-painted "L"-shaped metal frame. The printhead protrudes from the upward arm of this "L," driven up and down by a motor in the base. A roll of plastic filament fits onto a hook on the back of the arm, with the filament fitting through a guide loop in the top and into the printhead.

The printhead is not covered, so you'll need to use some caution — you could easily burn your fingers on the exposed hot end from which the melted filament extrudes. The circular print bed sits on the bottom arm of the "L," with another motor in the base pushing it forward and backward. Additionally, a third motor underneath the print bed spins it around.

The print bed is made of mirrored glass. It isn't heated; instead, the printer comes with a canister of hair spray (Aqua Net Extra Super Hold brand) that you spray onto the print bed to make the plastic stick to the glass surface during printing.

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You'll find a camera just under the print head, which is an unusual placement for 3D printers. This provides a live view of the print on the print bed, to see how well it's progressing.

The back of the L features a power port, Ethernet port and two USB ports (one input, one output). The Ethernet port is the primary method of connecting to the Internet, but the Polar 3D includes 802. 11b/g wireless capabilities. When we tried to set the printer to automatically join an existing wireless network, it often failed to do so, creating its own wireless network instead. This is the default mode of the Polar 3D, so to get it onto our existing test network, we had to connect to it with another device and reset it from the Web interface.

Print Materials: Wide Range, But No Heated Bed

The Polar 3D comes with a roll of 1.75-mm PLA filament, but the printer supports other materials as well. However, the lack of a heated print bed means that you have to use different methods to get the print to stick.

With the included PLA, a quick spray of the included hair spray makes the glass build plate sticky enough that the PLA sticks to it. However, this won't work with ABS, the other commonly used print material. Instead, Polar 3D recommends the use of Elmer's X-treme Glue Stick, which is basically water-soluble superglue. After the printing model, you use water to remove the glue and lift the print off the print base.

We tried this method when printing in ABS, spreading a thin layer of the glue before printing — and it works, though removing the prints is rather awkward. With a heated print bed, ABS prints usually pop right off or require only a bit of prying to lift. Here, we did need to do quite extensive soaking to get a print with a large base (like our Thinker model) to lift off.

Print Speed: Midrange

The Polar 3D is a fairly fast printer, with our Thinker model taking about 5 hours and 19 minutes to print with the Draft quality setting, which has a default layer height of 0.32 mm. Changing this to the Medium quality setting (which had a layer height of 0.2 mm) upped the print time to 6 hours and 51 minutes. Those are the only two quality presets offered by this printer.

The printing times put the Polar 3D in the middle of the 3D printer pack for speed, comparable to both the more expensive Taz Mini, which took about 5 hours and 13 minutes for a similar print, and the similarly priced XYZ da Vinci 1. 0 (5 hours and 9 minutes).

Interface: Controlled Through the Cloud

In addition to its rotating print bed, the Polar 3D is different from other 3D printers in how you control it. Rather than controlling the printer directly or through a program running on a PC, you run the Polar 3D via the Web, with a cloud interface that puts all of the features of the printer online. This ties in with the educational approach of the Polar 3D, as it allows a teacher to set up and control the printer, deciding which models are printed and in which order. These users (called managers) can also add, remove or alter models and printers, so a group of students can upload models and schedule prints, with the administrator overseeing the process and intervening as required.

This online approach also covers the creation of models. A basic Web-based modeling program comes with the 3D Polar and can create models from scratch using simple modeling tools. You can also use the modeling program to upload and edit other files in . STL format. Either way, models can be scaled, rotated and prepared for printing.

While this approach is adequate for basic use, the Polar 3D is missing some features. For instance, there's no way to scale a model to a particular size or to see the specific dimensions of a model. You're presented with a 3D view of the model on the build plate, but no specific measurements.

Once the model has been loaded or created, it can be saved (again to the cloud), shared or sent to a printer for printing. You can scale a model here, but again, you can't set a specific size; you have to look at the size and then calculate the scaling yourself.

You run the Polar 3D via the Web, with a cloud interface that puts all of the features of the printer online. This ties in with the educational approach of the Polar 3D, as it allows a teacher to set up and control the printer.

Polar 3D's online approach generally works well. It is easy to navigate and edit models, and create and share them. But it becomes a little confusing when you are looking at a saved model, and it isn't clear what, exactly, the buttons marked Edit and Open do. Edit opens the information for the model (who created it and when), while Open, somewhat confusingly, loads the model for more detailed editing in the built-in 3D modeler.

This interface also hides many of the features that other programs offer. Most of the technical settings that you customize for different printing materials (such as the layer height, the speed at which the printhead moves and so on) are kept out of sight. These are available by opening the model and selecting Cura Settings, although this process isn't really covered much in the documentation.

Print Process: Straightforward

To print with the Polar 3D, you first load the model to the cloud service, saving it for future printing. Then, you open the model and select Load To Printer. The system then gives you the option of which printer to use if you have more than one. From there, you go to the printer in the Printers tab, and hit Start Print.

MORE: 8 Awesome 3D Printing Trends to Watch

The printer screen shows the basic information on the printer and the progress of the print, including the time remaining, the printhead temperature and the amount of filament remaining. There is also a live view of the print in progress. It isn't necessary to stay on this Web page; the printer will happily keep printing if you turn off the computer and walk away. This page also works on portable devices; we had no problem loading and starting prints from an iPad and an Android phone.

Print Quality: Good, But Some Issues

We found that the Polar 3D generally produced high-quality prints with good levels of detail and smooth, natural curves. However, it struggled with one of our test models, and prints did require some cleaning up to remove odd whiskers of print material.

Our first test model was a scan of Auguste Rodin's "The Thinker" statue. We print this model (which is created from a scan of the original) at a height of about 4.5 inches. The Polar 3D had no major problems with this, producing a print that accurately captured the smooth curves and fine details of the original, especially around the shoulders and head. The levels of the print were fairly visible, and we did see some whiskers of the print material from where the printer had shifted the printhead between parts of the print, dragging a small whisker of material with it. These are easily removed, but they do leave some traces on the print that require trimming.

Next, we tried a set of gears that can be assembled into a planetary gears set. The Polar 3D did a decent job here, but again, some of the parts had to be trimmed with a knife to fit together. In particular, we found that the small holes in the gears that fit over pegs on other parts were overfilled with material, caused by the material slumping and spreading slightly as the print was formed.

Finally, we tried a 3D model of a modern sculpture that has lots of hard-to-print angles and edges. We were not able to get this model to print on the Polar 3D using the default settings, as the slicer — the program that converts the 3D model into layers that are printed one by one — created insufficient support for the model to stick to the print bed. After some testing, we were able to create a print by using the advanced settings to build a raft, a layer of plastic underneath the model that supported it while printing. But that's a weakness of the Polar 3D: Its hairspray method for getting models to stick does not work very well for small areas, so you need to make sure that there is sufficient area on the print bed to keep it held down.

The Polar 3D is designed for educational users, and it excels in that area. The combination of excellent, cloud-based software for creating and managing 3D models and the printer itself makes it easy for a large group of users to build models and have them printed on one or a number of these printers. It is less suited for other users, though; these features are overkill for home users.

Although the Polar 3D is well priced, at $799, and can produce good-quality prints, the lack of a heated print bed makes the use of materials like ABS more complicated. If you are happy to stick to PLA or don't mind messing around with glue sticks and the like, the Polar 3D can work. But those who want to experiment more with other print materials will be better off spending a bit more on a printer that can handle them, like the LulzBot Mini.

Today's best Polar 3D deals

No price information

For more information visit their website

Richard Baguley has been working as a technology writer and journalist since 1993. As well as contributing to Tom's Guide, he writes for Cnet, T3, Wired and many other publications.

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dp polar launches AMpolar i1 3D printer with Xaar printheads: Technical specifications and pricing

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Industrial 3D printer manufacturer dp polar will unveil the latest addition to its range, the AMpolar i1, at Formnext 2021 next week. 

The firm has once again opted for 1003 printheads from inkjet printhead developer Xaar to kit out its new machine and enable the mass production of 3D printed parts on an industrial scale.

Based on dp polar’s patented single-pass 3D printing process, the AMpolar i1 will reportedly facilitate build volumes of up to 240 liters across its continuously rotating print platform, while achieving an output that traditionally would have required multiple conventional 3D printers. 

“The AMpolar i1 delivers all the production benefits of the AMpolar i2, but at a scale and in a format that facilitates businesses in their early stages of exploring what is possible in mass production 3D printing,” said Florian Loebermann, dp polar’s Managing Director.  

“Xaar’s printheads have proved invaluable in unlocking the full potential of our systems, and the openness of the Xaar team to support our innovations is helping to establish 3D printing and additive mass manufacturing as a practical reality in the volume production of parts for many businesses.”

dp polar’s single-pass printing technology

The AMpolar i1 leverages dp polar’s patented single-pass material jetting 3D printing process, which is based on a rotating print platform. The rotating platform allows the firm’s technology to work continuously to facilitate the uninterrupted printing of parts from the first to the last layer.  

dp polar develops industrial 3D printing systems for use within a variety of industries, including the automotive, aerospace, mechanical engineering, and consumer sectors. 

dp polar launched its first 3D printer at Formnext 2019, the AMpolar i2, in partnership with German chemical group ALTANA AG, which had previously acquired a stake in the company in 2017. The machine’s large build volume, rotating print platform and single-pass printing combination opened it up to industrial series production of additively manufactured parts. 

The firm has worked with Xaar over several years for the use of its printheads, which are key to maximizing the scalability and productivity of its single-pass printing technology.

The AMpolar i1 3D printer. Photo via Xaar.

Achieving industrial-scale production with Xaar printheads

Best known as a manufacturer of inkjet technologies, Xaar also has a background in high-speed sintering (HSS), having opened a dedicated 3D printing hub in 2016. Just last month, industrial 3D printer manufacturer Stratasys took full control of Xaar after acquiring all remaining shares in the company. The two had worked together to integrate selective absorption fusion (SAF) technology into Stratasys’ H Series machines to accelerate production-scale 3D printing.

Xaar’s ultra high viscosity technology enables its printheads to jet fluids up to 100 centipoises (cP) in a single pass, a capability leveraged by dp polar’s new AMpolar i1 printing system. In particular, the printer is equipped with the Xaar 1003 printhead which combines speed and reliability with the capacity to jet a multitude of fluids at increasingly high viscosities. 

The printhead therefore enables the AMpolar i1 to jet parts at volume and deliver 3D printed objects on an industrial scale, while opening up a range of new applications.

The AMpolar i1 is a more compact version of the AMpolar i2, enabling build volumes of up to 240 liters across its rotating print platform, with a build volume of just under one square meter. The machine prints layer of between 4-25µm and can achieve a resolution of up to 720 x 720 x 5.000 dpi. 

According to dp polar, the combination of its single-pass printing technology and Xaar printheads delivers scalability, productivity and agility to its production process. The machine reportedly achieves an output that would require multiple conventional 3D printers, and significantly more capital investment, to match. 

“The innovative and agile AMpolar i1 firmly establishes the use of resin jetting as a truly practical and commercially viable manufacturing process,” said Gareth Neal, Xaar’s Customer Applications Manager for Advanced Applications, Technologies and Fluids. “With Xaar’s range of printheads including our unique Ultra High Viscosity Technology providing the speed, flexibility and reliability demanded, functional inkjet applications have never been more accessible, affordable or productive.”

Visitors to Formnext will be able to see the AMpolar i1 for the first time at dp polar’s stand in Hall 12. 1. To keep up with all the news and launches at the show, make sure to tune in to 3D Printing Industry’s livestreams, taking place each day of the event, by subscribing to our YouTube channel. 

Gareth Neal, Xaar’s Customer Applications Manager for Advanced Applications, Technologies and Fluids. Photo via Xaar.

Technical specifications and pricing

Application technologyMaterial jetting
Build widthmax. 280 mm (11.0 in)
Build area0.96m2 (10.3ft2)
Build volume240 L (8.5ft3)
Layer thickness4-25µm
Resolution (xyz)up to 720 x 720 x 5.000 dpi
Productivitymax. 7 L/h (0.25 ft3/h)

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Featured image shows the AMpolar i1 3D printer. Photo via Xaar.

Tags ALTANA AG AMpolar i1 AMpolar i2 dp polar Florian Loebermann Gareth Neal Selective absorption fusion Stratasys Xaar

Hayley Everett

Hayley is a Technology Journalist for 3DPI and has a background in B2B publications spanning manufacturing, tools and cycling. Writing news and features, she holds a keen interest in emerging technologies which are impacting the world we live in.

Starting with polar 3d printer

Technician

Hello! I have long wanted, I have been burning with a 3d printer for a long time.

It burned when this movement was not yet so diversified, and apparently burned out. :o But years passed, periodically thoughts returned and disturbed the mind, and finally they got a chance to be realized ...

So I would like to share some thoughts about my project, I will be sincerely grateful for advice, criticism, comments and in general, any useful information on the subject. Let's clarify a couple of things right away. This is my first experience in the field of 3d printing, but I am well acquainted with similar CNC milling machines, I have a specialized education in this area, and also worked as a CNC machine operator and currently I work as a technologist-programmer of 3-axis milling machines with CNC. nine0003

So. I drew attention to the polar schemes of printers (rotating 3D printers), compared to conventional Cartesian printers, they are distinguished by a lower material consumption of the design, smaller dimensions with a larger print volume, and judging by information from the network, this type has promising characteristics of print speed. Well, in general, as for me, this design attracts with its overall simplicity and 'elegance'.

In terms of mechanics, I want to take the design of Pimaker 3D as a basis.

I think this is by far the most successful layout in which you can achieve high-quality and fast printing among polar 3D printers. Aluminum frame (bed), guides of round section with linear bearings. The Z-axis guides will simultaneously serve as a support for attaching the upper beam, so I will make them bold Ø25-30mm. Bearings from China, guides will most likely be made on their own. Ball screws from the same China or a home-made pair of screw + nut will be used as drives. This is due to the desire to get the highest possible quality and print speed. In addition, there are ideas to use heavier extruders for printing clay materials. I think the platform for the extruder should be made with the ability to quickly change the working tool. nine0003

But there are questions with electronics . ... and a lot :oops: Namely, what to control and with what software? The ideal option, in view of my meager knowledge of electronic components, would be to have some kind of ready-made solution. For me, this is the main issue at the moment, which stops the development of the mechanical part. Perhaps because of this issue, you will have to abandon the polar coordinates altogether.

In general, it would be interesting to hear the opinions of experienced users about such an undertaking. Does this design have the right to life? Does it make sense to bother? Has anyone tried to do something similar? Perhaps someone wants to do it? At worst, maybe someone has some kind of useful information. nine0003

Best regards, Andrey!

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