Quote:
Originally Posted by cgmv123
Start by using a center punch to accurately place the center of the hole. Then drill through with a bit like 1/8". Then use the 1 1/8" bit. Remember to properly align the workpiece under the drill press each time. Cutting oil will help too. |
Good advice, except for the part about going from 1/8" to 1-1/8" directly. You absolutely need to work your way up to 1.125 as others have noted. PM me if you want to know why.
You cannot hand-hold a drill to make such a hole. This is dangerous. A drill press is the
only safe way to make that hole with a drill bit. Your jagged hole is from the human inability to keep the drill perfectly centered on the pilot hole. As the bit bounces off the walls of the hole, you get chunks taken out instead of slivers.