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3D printer print size - 1.2 x 1.5 x 1.8 m. by Sprint 3D.

Rapid prototyping of large-scale art products

In the minds of many contemporaries, 3D printing is a technology that can create extremely small objects - spare parts, souvenirs, various kinds of models, and so on. Moreover, many believe that it takes many hours. In the meantime, a whole car has already been created through 3D printing. And it didn't take weeks. Let's consider which print size 3 D printer is possible today and what print speed 3 D print is currently being achieved. But first, a few words about prototyping.

Rapid prototyping of 3D models is a process of rapid creation of mock-ups of models (prototypes), which will later be used to improve and finalize design solutions. In some cases, such prototypes can also be used as finished products.

Satellite 3D Printer 500x500x800 cm

Modern 3D Printer Capabilities

3D printing equipment has made a huge leap forward in recent years. One of the brightest representatives of the new generation of printers for rapid prototyping of dimensional art products is the 3D printers that we use in our work.

Main equipment features:

• Working area - up to 1.2x1.5x1.8 m.
• Speed ​​3 Printing D of along the Z axis (in height) - 35 cm / hour.

How do you achieve high print speeds and the ability to produce large items? First of all, due to the use of special photopolymer gel compositions with a high degree of viscosity, as well as due to the rationalization of the placement of supporting structures. The so-called GDP-technology (Gel Dispensed Printing) is used. It is based on the use of liquid light-sensitive compounds that quickly harden under the influence of ultraviolet lamps. Those are located directly above the print heads and act directly on the material. This system ensures fast curing.

Due to the fact that the GDP technology cures faster than other technologies, it is not necessary to use supports for horizontal surfaces. Obviously this saves time. And at the same time, the materials of production.

Also note that 3D printer models and some analogues use two printheads that work independently of each other. This allows you to create two objects at the same time in one workspace or separate components of one large product. Accordingly, print size 3 D of printer in this case, when gluing, it increases at least twice and can exceed 3 meters.

Large-scale 3D printing: how much more difficult it is than small-sized

In fact, print size 3 D of the printer practically does not affect the complexity of production and subsequent post-processing. If in older models of printers there could be cases when the material clogged the nozzle and the work done simply went down the drain, then modern equipment is devoid of such shortcomings. You don’t have to worry that something will go wrong in the many hours of printing and you will have to redo everything from the beginning, wasting time and a lot of resources.

Separately, we note the simplicity of the post-processing process. After hardening, the gel lends itself perfectly to a wide variety of processing. It is perfectly painted and varnished, which opens up the widest possibilities for creating a wide variety of dimensional objects: stands, product models, models of equipment and much more. Everything is fast, convenient and at the same time quite inexpensive. The printing process itself and finished products meet the requirements of environmental friendliness and safety of use. During production, no harmful and dangerous substances are emitted, and the printed products fully comply with modern environmental standards and are hypoallergenic. This is a particularly important factor at the present time.

How does 3D prototyping work? A physical structure is built according to a previously prepared mathematical model.

The advantages of prototyping are obvious:

1. Visibility of the whole process;

2.

3. Reduce engineering and design costs.

The first step in prototyping is mathematical modeling, which creates a mathematical model in STL format. After that, prototypes are finalized to create the necessary surface textures. Prototyping also includes the development of technologies, the production of specific models and their finishing. Everything is almost identical to small-sized printing, although products are made with many times larger sizes.

Advantages of rapid prototyping in large-scale printing:

• Accurate and fast verification of the conformity, function and form of the printed design.
• Extensive design flexibility and versatility with the ability to quickly transition between different stages of production.
• Increased speed 3 D print and no waste of materials that are already used in large quantities.
• Ability to quickly test the properties of specific products in order to further develop new materials and at the same time obtain new properties of finished products.
• Minimize the risk of any design errors and improve the quality of finished products.

If printing on a 3D printer with a working area of ​​1.2x1.5x1.8 m is also relevant for you, SPRINT3D is at your service. Modern technological equipment for dimensional printing, high-quality materials and professionalism at all stages of production - all this the SPRINT3D team provides to each client.

Still have questions? Use the feedback form on the website or call + 7 (929) 680 27 76.

8 nuances worth paying attention to / Habr

Sooner or later, everyone learns about 3D printing. And only a few lucky people, imbued with the opportunities that 3D printing opens up, catch themselves thinking that they want to purchase a 3D printer. The desire gradually develops into a serious decision and the search for the right option begins. And here the potential buyer is faced with the fact that he does not fully understand what to choose among the whole variety of 3D printers. We will try to answer this question in as much detail as possible.

What to pay attention to and how to make a choice? We want to offer a small checklist of the nuances that you need to pay attention to when choosing a 3D printer.

You need to decide for yourself what tasks you will use this technique for? What capabilities should a 3D printer have to solve your problems?

Point 1: Decide on a 3D printing technology

The first step is to decide on the technology of 3D printing. There are two main paths here.
If you are faced with the task of manufacturing high-precision and miniature products, such as jewelry, then 3D printers using SLA or DLP technology are suitable for you. Such printers are specially designed for the manufacture of high-precision models. 3D printing in these printers occurs using a laser beam that illuminates the photopolymer resin. Hence the accuracy of the models.

Prominent representatives of this segment: Form 2 3D printer or B9Creator 3D printer
If you are faced with a wider range of tasks, and functionality, part size, and low manufacturing cost are more important, then an FDM printer will suit you. 3D printing on this equipment involves layer-by-layer melting of plastic.

If everything is clear for SLA printers. The scope of their application is jewelry, dentistry, high-precision prototypes of small parts. Then we will dwell on FDM printers in more detail. There is a lot more variety of different options for implementing printers.

Nuance 2: Evaluate your needs

Of course, you always want to get all the best and with maximum opportunities. Do you need all this to solve your current problems?

What can be an example? For example, the size of the working area of ​​the FDM 3D printer. There are printers on the market with a large print area (1m x 1m x 1m), and with a very small one (100mm x 100mm x100mm). But for most tasks, a certain standard has already developed. This is the printable area within 200 x 200 x 200 mm. With slight fluctuations in size in one direction or another. Most 3D printers have exactly this size of the working area. This volume is enough to solve 95% of any tasks.

But options are possible...

If you plan to make small parts, then a smaller size may be enough for you. But if your work will be related to manufacturing, for example, a master model for casting, or large prototypes, then only then it makes sense to pay attention to a printer with a large print area.

In other cases, the size of the printable area larger than the standard is nothing more than a nice bonus. But as they say, you have to pay for everything. Therefore, most often it makes sense to focus on the “standard” print area. And even if the part you need to print is larger than the working area of ​​your 3D printer, you can always cut it in a special editor, and then print 2 parts of the model and glue them together.

Point 3: Decide on the complexity of the products

You should decide for yourself how complex models you will print on a 3D printer. If you plan to manufacture complex prototypes, or complex art models, then you need a 3D printer that can print with two materials. This is necessary so that your printer can print supports from soluble material. If the models are not the most complex, then you can get by with one extruder and save the budget. A complex model is a model with a large number of elements suspended in the air, or a model whose elements have angles greater than 30 degrees.

Point 4: Decide on the list of materials used.

Another important point. You must immediately determine for yourself a list of possible materials with which you are going to print. This primarily applies to materials with a high degree of shrinkage, such as ABS and Nylon. In order to print with such materials, a heated table is clearly required in a 3D printer. And it is very desirable to have a closed case to provide a thermal circuit around the model.

If you plan to print with PLA only. You don't need a heated table.
But still it is better that the printer has a heated table. Now the difference in the cost of printers with a heated table is practically the same as the cost without it. But you get a universal solution with which you can perform a full range of tasks facing a 3D printer.

One more thing. Possibility of printing with flexible materials.

Quite a number of 3D printers face the problem of printing with flexible materials. Of course, printing with various Flexes and Rubbers is very interesting at first glance. But the use of these materials in life is not very common.
Usually, for most people, this happens like this:

A couple of models are printed, the understanding comes that this is not a fast and rather complicated process. And this is where the acquaintance with flexible materials ends. Therefore, it makes sense to demand such an opportunity from the printer if printing with such materials is very necessary.

Point 5: Construction and kinematics

Next, you need to pay attention to the design of the 3D printer. Even if you are not a great specialist in technology, you can immediately see that some printers have an open design. And others are closed. As they like to be called in the Russian-speaking community "cubes". What does the appearance say?

Printers with an open design, usually have kinematics with a horizontally moving table (based on Prusa 3D printers). This kinematics has some inherent flaws. Such as, not the highest print speed and possible print quality problems associated with the complexity of the settings. First of all, this is the so-called wobble.

Also, the lack of a closed housing can cause print quality problems with high shrink plastics (ABS, Nylon).

The main advantage of printers of this design is their price. It is usually lower. But as you know, you have to pay for everything. In this case, the worst performance. The so-called "cubes" today, is the main design, which is represented by leading manufacturers on the market. Such printers are built according to the scheme with a lifting table. And they lack most of the shortcomings that are inherent in printers from the previous group. “Cubes” usually have a closed body, which allows the highest quality printing with plastics with a high degree of shrinkage.

Closed case printers are more rigid. This results in better quality printing.

Print head movement kinematics, available in various designs. They have their pros and cons. But most of them have advantages over moving table printer circuits.

Point 6: Diameter and changeable nozzle

Most 3D printers on the market come with 0.3-0.4mm nozzles. This is enough to solve the vast majority of tasks facing a 3D printer.
Some of the printers have the ability to install a nozzle of a different diameter, others do not. As we wrote above, the need to print with nozzles with a diameter other than 0.3-0.4 mm arises very infrequently. This mainly concerns, or personal experiments, or some very specific tasks. If you do not plan to do this, then this opportunity is not so necessary.

What do we mean by specific tasks?

This is especially true for large prints where it is important to reduce print times. This can be achieved by using large diameter nozzles. For example, with a diameter of 0.6-0.8 mm, or even a diameter of 1 mm. For printers with a large printable area, the ability to change nozzles is already a vital necessity.

So, just like with the heated table, the ability to change nozzles is a nice bonus. It is not mandatory, but very useful if you do not have to pay extra for it.

Point 7: Print thickness

It is important to understand that most models on a 3D printer are printed with a layer of 0.1-0.2 mm. These are the optimal values ​​that allow you to achieve quality and acceptable print speed. There are a certain number of printers that allow you to print with a layer of less than 0.05 mm, and get very high quality prints. But then there is the problem of a sharp increase in print time. And if such print quality is important to you, then it probably makes sense to turn your attention to 3D printers, which we talked about at the very beginning of the article. These are 3D printers using SLA or DLP technology.

Point 8: Extruder type

Today there are two main types of extruder. This is a direct extruder in which the bar feed motor is located in the printhead itself. And the so-called Bowden extruder, where the plastic feed motor is located on the body. And the plastic itself is fed to the extruder through a fluoroplastic tube.

What are the advantages and disadvantages of each type of extruder?

Bowden extruder, due to the absence of a motor on the print head, has a lower weight. And therefore, it has greater positioning accuracy, which affects the print quality. And a higher speed of movement, which, accordingly, has a positive effect on the speed of printing. But it has one drawback. It is usually quite difficult to print with flexible plastics on a Bowden extruder. Such as Rubber or Flex.

This extruder reveals all its positive features when using plastic with a diameter of 2.85-3.00 mm. But this type of plastic is less common than the now standard plastic with a diameter of 1.75 mm. And therefore, users of printers with such plastic are often deprived of the opportunity to use new types of materials. Which are primarily produced in the most common form factor of 1.75mm.

Direct extruder usually does not have such big problems with flexible plastics. Easier to set up, but due to the greater mass of the print head, it is inferior to the Bowden extruder in terms of speed and positioning accuracy.

Which do you prefer? This is the user's choice. We just wanted to talk about the pros and cons of these extruder types.

Of course, there are many more nuances when choosing a 3D printer. But we think that even our small list will force you to look and study some points that you may not have thought about more closely.

And will save you time and money when choosing a 3D printer.

3Dtool company has extensive experience in the 3D equipment market. We work with leading Russian and foreign manufacturers, offering high-quality equipment for a reasonable price. Our service center is staffed by highly qualified specialists who are able to solve any problem in the shortest possible time, and all offered 3D printers come with a 1-year warranty.

In our assortment you can always find 3D printers for your tasks:

1) Budget 3D printers
2) Business 3D printers
3) Large area 3D printers
4) SLA and DLP 3D printers

Do you have any questions? Call by phone: +7 (499) 992-72-23 (Moscow) and 8 (800) 775-86-69 (free of charge within the Russian Federation) or write to the mail: [email protected] and our employees will be happy to give you a detailed consultation on any topic of interest.

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