What Exactly is a 3D Laser Printer?

It might be helpful to use the Internet to learn new things, but there are instances when it takes time to get information that is 100 percent correct. For example, you may come across the term "3D laser printer" and consider how lasers may be utilized to construct things.

The hard part is that the term 3D laser printer" isn't correct. If you come across it, it's most likely being used to describe either an SLA or an SLS 3D printer. Even though they approach it very differently, both use lasers to produce 3D things. Let's examine each in more detail.

1.       Stereolithography (SLA)

SLA, often known as stereolithography, was the original 3D printing method. It turns into a solid by selectively curing a photosensitive resin using laser UV light. An SLA 3D printer also has a resin tank and build a platform supported by an elevator and the laser.

The user must fill the resin tank with an SLA 3D printer before starting the construction process. Following completion of that, the build platform descends inside the resin tank, leaving just one layer of height between it and the resin tank floor. The resin tank's bottom is transparent, and the laser is positioned beneath it, shining upward through it.

2.       Selective Laser Sintering (SLS)

A laser is also used in selective laser sintering (SLS), although the procedure differs from SLA. The substance that the technology employs makes the most difference. SLS uses a polymer as a fine powder, and the laser fuses the particles rather than using a photosensitive resin. An SLS 3D printer also has a powder bin, an adjustable build platform, and a laser. A layer's worth of powder is added to the powder bin to start the print process. The laser "draws" the initial layer of the print onto that coating by sintering the powder into a single solid. A fresh layer of powder is applied on top of the previous one after each layer, and this procedure is repeated until the object is finished.

3.       Misnomer

The Glowforge is another item that the "laser 3D printer" could refer to in addition to the technologies mentioned above. It is a laser cutter, even though it calls itself a "laser 3D printer. “The Glowforge is simple and compatible with various materials, including metal and cardboard. The capability to customize your laptop by etching a unique design on the backplate attracted our attention.

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