Drilling at Penn Metal Fabricators is accomplished using various drill machines. Four of the machines are Natco Drill machines of various sizes the largest having a table size of 24″ X 48″ and the smallest with a l2″ X 24″ table. These machines can drill up to 42 holes on one stroke using fixtures that locate the hole in various hinges, extrusions, and castings.
Drilling is also performed on a Bridgeport Knee Mill which can accurately locate holes. Parts that have been drilled and need tapped are tapped using a Clausing Tapper which taps pre-drilled holes one at a time.