what is the difference between polyjet and fdm
The difference between FDM and PolyJet printing is that PolyJet printing will give you extremely smooth surfaces, complex geometrical structures and precision like never before. Another great advantage that comes with PolyJet printing is that you can use a number of materials in one single prototype.
Difference Between FDM and FDMA. Frequency Division Multiplexing, or FDM, is a multiplexing technique for the physical layer that allows multiple low bandwidth signals to share the same high bandwidth frequency range. It is achieved by allocating a smaller frequency range to each signal that is using the same channel.