We have received a number of questions about available online materials and proctoring procedures to facilitate NIMS testing. Please visit our COVID-19 updates page to learn about resources as they become available.
The actual validation method is part verification by MET-TEC or an instructor with the Inspector credential. Someone other than the candidate must run the program in a physical machine using the deliverables from the candidate and produce the parts to 100% specifications. The machine operator can only perform fine tuning to speeds and feeds; no geometry or workholding changes or markups on documentation are allowed by the operator to bring the part into specification.