Desktop SLA 3D Printer

 

Working principle

 

 

SLA Technology Overview
SLA (Stereolithography Appearance) is a stereolithography method and one of the earliest practical rapid prototyping technologies. This technology uses liquid photosensitive resin as raw material, and focuses ultraviolet light or laser on the resin surface to solidify it.

 

Technical Principle
Use of liquid photosensitive resin: SLA technology first draws a three-dimensional solid model through CAD (computer-aided design), and then slices the model using a discrete program to generate scanning path data. These data accurately control the movement of the laser scanner and the lifting platform.

Laser curing process:
The laser beam passes through a scanner controlled by a CNC device and irradiates the surface of the liquid photosensitive resin according to a preset scanning path, so that the resin in a specific area is solidified. After one layer of processing is completed, the lifting platform is lowered a certain distance, covered with another layer of liquid resin, and the second layer of scanning is continued, and the layers are stacked to form a three-dimensional workpiece prototype.

1. What level of precision can this desktop SLA 3D printer achieve?
It can usually achieve high-precision printing, for example, the layer thickness can be as low as tens of microns. Some models can achieve a dimensional accuracy of ±0.05mm, which makes the printed model rich in details and can meet some design and production requirements with high precision requirements, such as jewelry design, small mold production, etc.
 

2. What materials can be used for this printer and how much does it cost?
It can use a variety of liquid photosensitive resin materials, covering different types such as ordinary resin, high-strength resin, high-temperature resistant resin, transparent resin, etc. to meet different application scenarios. The cost of materials varies by type and brand. Generally speaking, ordinary resins are relatively affordable, ranging from a few hundred yuan per liter; while some special performance resins, such as high-performance engineering resins, may be more expensive, thousands of yuan per liter. However, the specific cost is also related to factors such as procurement volume.
 

3. How is the printing speed of the printer, and what are the factors that affect the printing speed?
The printing speed of SLA 3D printers depends on many factors, and the basic printing speed of different models varies. Generally speaking, the printing speed is measured by the number of layers or volume that can be printed per hour. For example, some common models can print dozens to hundreds of layers per hour. The main factors affecting the printing speed include the complexity of the model (the more complex the structure and the more supports, the slower the speed), the layer thickness setting (the thicker the layer, the faster the speed, but the accuracy may be reduced), and the performance parameters of the printer itself, such as the laser scanning speed.
 

4. How is the stability and reliability of the equipment, and what should be paid attention to in daily maintenance?
This type of printer has undergone certain optimization designs in terms of stability and reliability. Taking some well-known brand products as an example, by using high-precision mechanical components and mature control systems, it can ensure long-term stable operation. In terms of daily maintenance, it is necessary to regularly clean the inside of the printer, especially the key parts such as the laser head and resin tank, to prevent dust and impurities from affecting the printing quality.

6. Compared with desktop SLA 3D printers of the same type and other brands, what are the advantages of this product?
Compared with other brands of the same type, Desktop SLA 3D printers may have many advantages. For example, in terms of accuracy, some models can achieve higher accuracy with advanced laser technology and optical systems; in terms of material compatibility, a wider variety of materials can be used, and even some exclusive high-performance materials can be supported.