SLA or stereo lithography is one of the oldest additive manufacturing processes known for “3D printing”. It is a laser-based technology that is effectively used in 3D printing where a UV-sensitive liquid resin is used, so it is also known as Resin 3D printing services. A UV laser beam used in the technology primarily scans the surface of the resin and selectively hardens the material. Stereo lithography requires support for overhang structures, which must build in the same material. Here is the Guide for SLA Printing Service
How Does SLA Work?
SLA printers mainly cure the resin by using the laser. So this resin printing service consists of parts, including a resin vat, a build plate, a laser, two galvanometers, etc. This galvanometer, also known as galvos, is primarily used.
An SLA printer typically consists of a resin vat, a build plate, a laser, and two galvanometers. The galvanometers (galvos) are extremely precise servos that come with mirrors and are used for aiming the laser. The laser is typically a solid-state and comes with a wavelength range of 405 nm.
It is an alternative method that helps place the laser on a moving gantry that also allows replacing the galvos.
This 405 nm light helps to shin the resin, which can cure the resin. SLA printers work by following the two distinctive method of building layers including top-down and bottom-up.
Bottom-up configuration (seen above): in this configuration, the build plate needs to be lowered into the resin vat until it becomes a small layer of resin. A transparent film or membrane is created at the bottom of the vet. The laser is correctly traced to the other side of the movie through the galvos (or gantry) that help cure the resin in a unique pattern. After that, the build plate is raised and peeled off the cured layer of the fi m. After completing the process, it lowered again. But next time will usually move down one layer less. You must remember that the cycle repeats several times to any 3D object.
Top-down configuration: In a top-down configuration, the build plat of the industrial printers is raised from the bottom of the resin vat; it waits until only a tiny bit of resin is found on top of the printer. After that laser is correctly traced on the top layer of liquid resin, it helps to cure the few micrometers of resin onto its build plate. After that, the build plate is lowered one increment into the v t. The process is continued several times to build up layers until the part is complete.
Comments