Resin 3D printing benefits and drawbacks

Resin printing: the good, the bad and the messy | 3D Print Club |  Collaborate Canada Bay

Different Resin 3D printing methods have different advantages and disadvantages, so each will have its own pros and cons. Additionally, the power of the light source, the characteristics of the photosensitive resin, and other components play a role. 3D printing resin is very good under normal circumstances, since:

1. Exceptional detail and quality. Although resin devices have a lower resolution (lowest layer height) than other printers (such as FDM), the results will still be more accurate. When liquid photosensitive resin is loaded into the printer, complex geometries are more easily created than with molten plastic.

2. Surface smoothness. Some layer lines will still remain after resin printing, but they are very small and almost invisible under some resin colors. After the polymerization reaction, prints become stronger and more attractive.

3. Materials are available in a wide variety. No matter how few types of resin there are, the list still includes all basic applications and requirements, and the species are still being added to it. Photosensitive resins include the necessary reactions and additives for working components such as dyes, visuals, and functional additions. The combination of different resins can result in a finished product with a special function.

4. Fast speed. In comparison with prototyping, resin printing is more efficient, and modern equipment can be very fast. With resin printers, high-quality parts can be produced in a few hours or a day depending on the size.

5. Some applications are relatively inexpensive. The cost of a resin printer may be high if it is used for a series of end-use products. In some cases, however, resin printing can save a lot of money, such as in the case of prototypes, custom dental equipment, and mold masters.

6. Prints that are waterproof. Photosensitive resins are stronger and more waterproof than plastic or powder materials, don’t absorb moisture from the air, and most of them are waterproof.

Another advantage of owning and operating a resin printer is that:

1. Use the build platform to create multiple objects. With the support provided by the software, the parts “fly”, making it easier to connect and print several models at the same time, without adverse effects.

2. Resin printing is gaining popularity. In the realm of photosensitive resin processing, manufacturers, enthusiasts, scientists, and other smart people are providing new materials, methods, and advances. In this way, there are more aspects and a variety of products on the market, and costs are reduced (mainly because of cheap desktop resin printers). There has been a lot of investment in this technology, so now it is easier to find basic knowledge, home arrest, resin, and other things requiring professional resin printing.

3. Safety of processes. Modern desktop equipment does not retain heat or emit smoke. Because resin printing is safer than others, the printer can be used indoors or left unattended.

4. 3D design is easier. Digital design is not required for resin printing. However, the proposal and geometric restrictions are less than those of other printing methods, so the objects can be more detailed and creative.

There are several disadvantages and limitations to this technology:

1. Occasionally, it is impossible or very expensive to print large items all at once. Due to resin printing’s ability to print smaller and finer models, ordinary printers are not large.

2. Requirements and constraints related to design. In product preparation for resin printing, there are still a lot of items to consider. Engraving details, for example, should have a width and length of at least 0.4mm. Printing quality is also affected by part orientation and mesh quality, so some knowledge and experience are needed.

3. Numerous supporting structures. It is recommended that objects be placed at a 45-degree angle without touching the platform in order to achieve the best quality. As a result, many supporting structures will be required. Although these structures can be removed, additional steps will need to be taken after printing. Aside from that, the supports after curing are strong and useless-they can’t be recycled into new resin.

4. Parameters for complex resolutions. It is an interesting fact about resin printing that the resolution parameter (accuracy/quality) is influenced by several factors, meaning that high-resolution prints need full attention. Furthermore, if the 3D printer is powerful enough to achieve a 50-micron resolution, the type of resin used may allow a 100-micron resolution.