Machine Drill a Square Hole in Round Stock 705 tubalcain

This is how I drilled a 1, 4 square hole in round stock. Please subscribe. ROSE INDEX LINKS The ROSENTHAL PRODUCTS WEBSITE The ROSE INDEX is protected by an approved U. S. Patent. The ROSE INDEX is made in the USA. Official RoseIndex YouTube Channel Link to LakeShore Carbide for purchase: Link to 3 minute video if about the index: I am NOT paid to show these links , drillsquarehole, squarebroach, howtodrillsquarehole, machineshop, machinist