Problem 4a: Describe the two RP processes - Fused Deposition Modeling (FDM) and Stereo lithography Apparatus (SLA) based on (1) the process (in some details), (2) the energy source, (3)

work volume, (4) material, (5) costs, (6) advantages and (7) disadvantages. Problem 4b: Describe briefly with figure one of the four AM of metals processes you have studied. What are the post processing methods you can consider for the process you have just selected?