SLA / DLP / LCD How to choose between three types of stereolithography 3d printers
With the mature development of 3D printing technology, various types of 3D printers have penetrated into the production life of people. Among them, light-curing resin 3D printers have become a popular choice for most people who want to make high-precision models for a variety of purposes, such as for companies, factories, creators, home use, and so on.
Nowadays, there are many kinds of stereolithography 3d printers on the market, so it becomes a problem to choose one. Next, we will introduce how to choose the right stereolithography 3d printers for you.
What are the main differences between SLA,DLP,LCD.
●SLA is the most traditional and widely used 3D printing technology that uses laser to cure resin, and has few restrictions on print size, but the print speed, accuracy and details are generally not as good as DLP / LCD 3D printers.
● DLP 3D printing technology first appeared in 2000. DLP 3D printing technology mainly uses UV projectors to project product cross-sectional graphics onto the surface of liquid photosensitive resin, causing the irradiated resin to be photocured layer by layer. Unlike SLA 3D printing technology with single point exposure, DLP 3D printing technology uses surface exposure, which can greatly improve the printing speed, and DLP 3D printing technology is generally better than SLA 3D printers in terms of accuracy and surface quality.
Most DLP 3D printers use a Top-down technology solution, where the light source is below the resin tank. The advantage of this solution is that very little resin is required to start printing, but the size of the print is also constrained due to the limitations of off-shape. DLP 3D printers are typically smaller models that can be easily deployed in office environments and are more widely used in dentistry, product development validation, research and education.
●LCD (mSLA) is similar to DLP 3D printing technology, but instead of using a projector to produce an image, it produces a specific image through the deflection of the LCD liquid crystal.
Benefit from the mature upstream chain of LCD 3D printing technology, LCD 3D printers can usually achieve higher resolution and smaller pixel dot size than DLP 3D printers. However, due to technical limitations, the optical power of LCD 3D printers is generally lower than that of DLP 3D printers, resulting in slower printing speeds. However, LCD 3D printers are more affordable than DLP 3D printers, making them very popular in the market.