Metal Ball Jar Lid Drill Press Holder for Sterile Culture Technique

This is a drill press table cover I redesigned with slots for a lid holding mechanism. It is sized to fit snugly on top of a Ryobi drill press, but can be easily modified to fit any sized drill press table. It's purpose is to aid the drilling of injection ports and air filter holes into standard metal Ball Jar lids. I thought it would be helpful to have a full circle ring holder to prevent the thin metal lids from twisting under pressure from the drill bit. Easily repeat drill hole locations in