Chris Grottenthaler is a machinist at Visionworks, Inc in Columbus, GA from 2008 and is responsible to produce the machined parts through programs, set-up, and operating the computer numerical control machine. He maintains the quality and safety standards and keeps all the records. He also maintains the equipment and supplies of all the machines. Chris assembles the mechanical parts or products with use of machine tools and equipment according to required specifications for producing the precision parts and instruments.