Types of rapid prototyping techniques Choosing the right rapid prototyping technology is critical to the success of a prototype. Each rapid prototyping technique has its own compromise in terms of cost, speed, material compatibility of the feature, fidelity level and development stage. Rapid prototyping doesn’t need to be limited to one process, one can use more than one manufacturing techniques to assemble a prototype. Following are the types of rapid prototyping technology available for engineering product designers: Additive manufacturing Stereolithography (SLA) Selective laser sintering (SLS) Direct metal laser sintering(DMLS) Fused Deposition Modelling (FDM) Binder jetting Poly jetting Other techniques CNC Machining Prototyping Vacuum casting Investment casting