What is FDM?

FDM (Fused Deposition Modelling) 3D printing is a popular additive manufacturing technique. It works by melting a filament of thermoplastic material, such as ABS or PLA, and depositing it layer by layer to form an object.

The process starts with a 3D model which is sliced into thin layers using specialized software. These layers are then sent to the 3D printer, which consists of a heated nozzle and a build platform. The filament is fed into the nozzle, where it is heated until it becomes a viscous liquid.
The nozzle then moves along the build platform, depositing the melted material according to the predetermined paths of each layer. Once a layer is complete, it quickly cools and solidifies, allowing the subsequent layer to be added on top. This layer-by-layer approach enables the creation of complex structures and intricate details.

FDM 3D printing is known for its accessibility, affordability, and versatility. It can produce functional prototypes, finished products, and even 3D-printed parts for larger assemblies. However, it may have some limitations in terms of resolution and surface finish.

Overall, FDM 3D printing is a widely used and practical method for transforming digital designs into physical objects with ease, making it a valuable tool across various industries and applications.

MSLA (Masked Stereolithography Apparatus) is a type of 3D printing technology that falls under the category of vat polymerization. In MSLA 3D printing, a resin or photopolymer liquid is contained in a vat, and an ultraviolet (UV) light source is positioned above it.

To print an object using MSLA, the build platform is lowered into the vat until it just touches the surface of the resin. This initial contact allows a thin layer of the liquid resin to be spread across the build platform.
Once the resin is in place, the UV light source emits light that passes through the LCD panel or LED array, which filters the light to create a specific pattern while remaining masked in areas where the resin should not harden. The portion of the resin exposed to the controlled light solidifies layer by layer as the build platform gradually moves upwards. This process is repeated until the entire object is formed.

MSLA 3D printing offers several advantages. It allows for the creation of complex and intricate designs with high accuracy and detail. The resin used in MSLA 3D printing can also employ a wider range of materials, including specialized resins that possess unique properties such as flexibility, heat resistance, or transparency.

In summary, MSLA 3D printing is a widely adopted technique for producing high detail physical models with a professional finish. While MSLA technology may produce weaker parts, it truly shines through when it comes to producing models otherwise unfeasible with FDM 3D printing.