TIP: How to drill your lag screws more smoothly.
Ivory soap can be used for more than cleaning. Soaps can be used as lubrication for screwing sheet metal or lag screws into wood. Take the screw and draw the threads of the screw across the soap to apply the soap. Be liberal with the soap. With lag screw, first drill a pilot hole smaller in diameter than the lag screw. Make sure to apply the soap at the beginning of the threads of the screw.