After years of looking for a competent machine shop that wasn't a total rip off, I finally found MASS MACHINING! Our company designs high precision lens mount adapter for Hollywood Directors of Photography & it's been a nightmare here in Omaha trying to find a shop that can do precision work at a reasonable price until I found Mass Machining! You need great work w fast turn times call Charles Leddy & tell him Frans sent you!! You'll be very pleased!! read more