The 3D printer is a machine used to quickly create solid objects or different types of components in three-dimensional format starting from a 3D digital file produced with particular development software (the CAD system is the most used). This type of printing is also known as additive manufacturing because, in fact, it occurs by overlapping different layers of material that will then create the object. Make a three-dimensional print it began to be very popular already in the mid-eighties, but in recent times it has experienced a series of innovations and revolutions that have led to the possibility of buying and using a 3D printer at home.
Today, in fact, many 3D printers are on sale, including cheap ones, which you can take home by paying even lower figures than you would pay to buy one of the many top-of-the-range smartphones for sale.
To be able to buy the best 3D printer for your experiences, however, it is important to be able to choose the most suitable model for the use that will be made of it: to do this you need to evaluate all the technical characteristics that distinguish one model from the other, such as the accuracy of printing, printing speed, size, filament materials and price. To help you choose, in this buying guide we will explain how a 3D printer works, we will illustrate what are the factors that must be evaluated for the purchase of the best 3D printer for your needs. One of the best online stores for buying 3D printers in Robu. In case you made a plan to buy a 3D printer, make sure to apply Robu.in coupon code to get extra discount on 3D printers.
How to choose the best 3D printer?
Given its complexity, you will agree with us in stating that the factors to consider before buying a 3D printer are many, some simpler and others more complex.
The maximum print size is a very important factor to consider, which basically depends on the type of use you will have to do with the device. Most of the more commercial and affordable models carry limitations relating to their dimensions and allow you to reach about 20 cm in height, length and depth.
This factor is substantially related to the 3D printer measurements, which in most cases vary between 40 and 60 cm in both three dimensions. Furthermore, a higher price range should not generally be associated with larger print sizes: in this product category, there are often other factors that affect the selling price.
2. Printing accuracy
This is another very important factor to consider, and it really depends on the ability of the print nozzle to position itself as accurately as possible. Usually, this factor is indicated in the technical data of each model and is calculated in millimeters.
Before purchasing it is necessary to keep in mind two distinct types of precision, which depend on the diameter of the nozzle itself, usually 0.3 or 0.4 mm:
Positioning accuracy: indicates the possible margin of error in positioning the nozzle. It can be about 0.1mm – 0.3mm in the cheaper models, up to 0.025 or 0.011mm in the more expensive ones.
Printing precision: indicates the precision in the thickness of the object created. This is a fairly standardized figure in any price range and can normally range from 0.1 to 0.3 mm.
Like any electronic device or traditional printer, 3D printers must also be characterized by a rather extensive compatibility. And compatibility means the ability to be connected and managed by different operating systems, such as Windows 10 or macOS.
4. File format
And, again speaking of compatibility, it is important to understand the type of file supported by the printer, because not all files are compatible with all printers: the most common format is the one with the. STL extension which can be managed by software. CAD for quick design and is very simple to manage and draw, but not very accurate.
Another very popular format is the G-code, a real programming language not really suitable for all users, but which in recent times has become much easier to manage thanks to a series of online programs that even allow its simulation.
Another very common file format is the one with the .OBJ extension: this is perhaps the most compatible format with three-dimensional moderation software, but it is generally only supported by mid-range or high-end 3D printers.
5. Print speed
Print speed is perhaps a negligible factor. And it is in the sense that when 3D printing, you still have to get used to a relatively long wait. In any case, this technical factor is reported among the characteristics of each model on sale, and is calculated on the basis of millimeters per second. Generally, this value can vary from 40 mm / s to 200 mm / s and is a factor that does not affect the quality of the print.
On the other hand, that of filaments is a factor to be taken immediately into consideration. There are different types of materials that can be used to print a 3D model, and as we have seen they are all sold in filaments. Here are the most popular ones:
ABS: it is a plastic material with good rigidity and resistance, which melts on 230 °. It is widely used by most 3D printers, but recent studies have highlighted some potential health risks. Furthermore, it is a non-biodegradable material, being 100% plastic.
PLA: it is instead a natural material that melts at about 200 degrees. It is not very resistant and can be damaged by external factors such as humidity, but being a totally natural material, it is not toxic, it is totally biodegradable and is also suitable for contact such as food.
Composite filaments: are materials developed thanks to the union of PLA with other elements such as copper, fiberglass or brass. It is a type of filament in continuous evolution with which the companies have wanted to continue to maintain non-toxicity and biodegradability, while adding greater resistance to shocks and atmospheric agents.
Another aspect to consider is the number of nozzles present. Most printers have only one, in other models there are two and, in the more expensive and complex 3D printers, there are also several nozzles with which to use different colors or materials at the same time. This option guarantees a much greater variety in the printing of your creations, and allows greater printing flexibility: in some cases, it is even possible to print your creations in double copy.
In order to buy the best 3D printer for your needs it is important to be able to choose the model that is most suitable for the use that will be made of it: to do this, you need to evaluate all the technical characteristics that distinguish one model from the other, such as the speed of printing, the accuracy of the printing, the dimensions, the materials of the filaments and the price.