... and metal part life from herePrototyping Way Material Tolerance Stereolithography (SLA) Technician's Choice, Semi-Flexible, PE-Like Durable, PP ... ,PMMA,POM,Nylon ,PU and so on+/- 0.003" Metal prototypes Aluminum, Stainless Steel, Carbon Steel, 17-7 PH, Brass, ... , auto parts, etc1 Rapid Prototype Samples Making CNC Machining, SLA(Stereolithography) and SLS(Selective Laser Sintering), FDM,vacuum casting, ...