LOCATING HOLES, DRILLING AND TAPPING IN CAST IRON

Duration: 18 min

Year Published: 1942

Creator: Office of Education (Department of Health, Education, and Welfare)

Color: B&W

Sound: Optical sound

Description: Shows how to lay out a bolt circle having eight holes, to use the center punch as centers for drilling and to use a tapping chuck for set screws. From the MACHINE SHOP WORK series. Operations on the Drill Press, Vertical Drill, No. 1