For design validation, functional testing or pre-series, 1–50 pieces are machined on the same machines and to the same tolerances as series production on an accelerated schedule. Lead time usually 5–10 working days, 48–72 h for urgent jobs; tolerance down to ±0.005 mm. Aluminium, steel, stainless, brass, titanium and POM/PA/PEEK. Input STEP, IGES, DXF, PDF or a physical sample; output part, inspection report and DFM notes, under NDA on request.