3D printing technology – Delta versus Cartesian
The 3D printing market is quite competitive and each printer has its own 3D printing technology and unique capabilities, so it’s important to know which printer is most suited for the results you want to achieve. As most 3D printers, Tractus3D printers use the FFF 3D printing method (also known as FDM 3D printing), which means everything is printed layer by layer using filament.
In the FDM 3D printing technology, two types of printing systems can be distinguished: Cartesian and Delta. The biggest difference between these two systems is the method of moving. Because each system has its own way of moving, you can achieve different results.
First more about the FDM technology
There are several different 3D printing technologies, but the most used is Fused Deposition Modeling (FDM 3D printing). The FDM technology is a Stratasys-patented additive manufacturing 3D Printing method of rapid prototyping. This process is also known as FFF 3D printing (Fused Filament Fabrication). The FDM technology is very popular. Over the past two decades, the FDM 3D printer has become even the most used 3D printing technology in the world.
With FDM 3D printing technology, the extrusion nozzle moves over the build platform horizontally and vertically. Thermoplastic material is heated to its melting point and then extruded, layer by layer, to create a three dimensional object. Each of these layers can be seen as a sliced horizontal cross-section of the eventual object. Once a layer is completed, the base is lowered to make room for the next layer of plastic. Once an object comes off the FDM 3D printer, its support materials can be removed.
In FDM 3D printing technology, there are two types of printing systems: Cartesian and Delta. The biggest difference is the method of moving. We will explain…
Delta 3D printer
Delta 3D printers also use the Cartesian coordinate system, but do not use linear-motion tracked movement to deposit the filament. Instead, they use three arms, each consisting of a parallelogram. They also move from one X or Y point to another, but do so by changing the angles of these parallelograms. The arms of a Delta 3D printer hang down from a fixed platform. All of the mechanics that drive the motion of the arms are located in that platform. As a result, the print head of the Delta 3D printer is a lot lighter than if it also had to contain motors for movement. This reduced weight leads to reduced inertia. By reducing the inertia, particularly at the end of a movement, the production head is able to respond quickly, while retaining its accuracy.
A Delta 3D printer usually features a circular print bed, which is immovable. Due to its circular print bed, the natural shape of a Delta printer is a circle. Therefore, rectangular objects tend to be rather small in comparison to a Cartesian 3D printer. What a 3D Delta printer excels at, in comparison to the 3D Cartesian printer, is its capability to build tall objects. Especially the highest point of the print can be made exceptionally accurate. It is also fairly easy to make them bigger, especially in height, due to their design. With an overall less complicated construction and less parts to be used, it reduces maintenance and costs. If you do not have/need a lot of horizontal space, but instead want to build a lot of layers on top of each other (vertical), then you should definitely consider a Delta 3D printer.
Its downside comes in the fact that a Delta 3D printer must be much taller than its build volume, due to the arm construction of the machine. This is why you will generally need more space to place your printer than you would with a Cartesian 3D printer.
Delta 3D printer disadvantages
- Format, it requires more space (in height)
- More difficult to pinpoint errors
- Harder to print objects with large surfaces (horizontal)
Delta 3D printer advantages
- Excels in printing in height
- Light, thus easy to move
- Instant change of direction possible
- More accurate in the centre than on outer limits
- Easy to maintain and upgrade
- High print speed and accuracy
Cartesian 3D printer
Cartesian printers owe their name to the Cartesian coordinate system they use, which was invented by Rene Descartes. They don’t just function based on an X and Y coordinate system, but also drive the print head on a mechanism that travels linearly on both the X and Y axis.
Cartesian printers move from left to right, front to back and up and down. Simply put, it gets from A to B by moving just one axis at a time. Most Cartesian printers consist of a square, moving print bed. Instead of having the nozzle move towards the print bed, the print bed moves towards the nozzle in some cases.
Cartesian 3D printers see their downside in the fact that their moving parts are quite heavy. Because of this, it is hard for a Cartesian printer to stop or change direction in an instant. The constant jerking of the platform can lead to prints coming loose and to inaccurate prints, especially when the prints get higher.
Cartesian 3D printer disadvantages
- Hard to modify due to spatial constraints
- No instant change of direction
- Not fit to print tall objects
- Small build volume
Cartesian 3D printer advantages
- Excels in width (horizontal) prints
- Easier to learn due to understandable kinematics
- Consumer friendly
- Easy to enclose most models due to cubic frame
Tractus3D Industrial Delta 3D printers
✓ Most advanced ✓ Competitively priced ✓ You are always covered
While much attention has been focused on the consumer marketplace, consumer-grade Delta 3D printers are not suitable for large-scale production grade 3D manufacturing. They do not have the speed, facilities or robustness which are critical for industrial manufacturing. Our Industrial Delta printers are different. Do you want to 3D print large parts at once or produce a lot of small parts in one print session, we make it possible. Need light weight parts that have the same strength as metal, with our PEEK 3D printers you can make it happen.
Create small and detailed parts
With a 3D printer on your desk you can easily create small parts and specialized tools yourself. It is far less complex than other machines, which means that you can produce more products in an efficient and simple way without the high costs. The 3D printers in our desk-series have a fast printing speed, a high accuracy and a low weight, making it easy to put on your desktop or move around. Read more >>
Create strong and lightweight parts
High-performance materials, like PEEK and ULTEM® (PEI) are stronger and more resistant than other thermoplastics, making them popular in a number of engineering applications. To 3D print such materials, you need a special printer that can handle very high temperatures. The High Temperature printers are designed for 3D printing high performance thermoplastics, which are strong and durable for long-lasting parts. Read more >>
Create large parts up to 2,1 meters
The ability to use 3D printing to enhance business operations, reduce costs and improve efficiency is exactly why a 3D printer has become a popular solution. If you’re looking for a way to produce detailed and big objects our large volume 3D printers are an excellent choice. They have a much larger build size than most other industrial 3D printers and can print objects fast at high resolution. Read more >>
Do you have a question about the 3D printing technology? We are there for you!
Don't hesitate to contact us. We are happy to help and to provide you with whatever assistance you need in researching the ideal solution for your business - in whatever way works best for you.
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