FDM - Fused Deposition Modelling
What is 3D plastic printing?
In free translation, this means modeling with molten material. Modeling is performed by applying the material through a nozzle which places it on the machine platform layer by layer. Each layer is a cross-section of the printed detail. It is similar to applying a cream on a cake but instead of the squeezer, there are the nozzle heads. The heads move in the X and Y axes, and the working table moves in the Z axis. The most common material is the so-called filament, a thermoplastic based on ABS or PC (polycarbonate). Currently, the minimum layer thickness that we can obtain in the FDM technology is 0.1 m, which translates into the object's accuracy. Some manufacturers claim that they are able to produce elements in this technology with the accuracy of 0.05 mm - a very wishful statement. A major obstacle to this technology is the requirement to use support structures that need to be broken or dissolved after production.
FDM 3D printer and its structure
FDM 3D application
- conducting fitting tests
- producing spare parts, tools and tooling
- models with low complexity, durable functional mechanisms, e.g. for the medicine and food industries
- museology and art
Materials used in the FDM method
Main advantages of FDM technology