How to Drill a Hole With an End Mill

Milling machines help transform a piece of metal into a useful or decorative item. End mills are the tools used for making certain cuts on or in metal that is in the milling machine. Learning how to use them can help you to become a more versatile and able metal craftsman.

Things You'll Need

• Working piece
• Marker

Instructions

1. Mark each side of the piece so you can clearly see the delineations.

2. Turn one of the edges of the piece so it is facing up. Secure it in the clamp of the end mill table. This position allows you to mill horizontally along the piece.

3. Lower the mill into position right above the piece. Move the clamped item back and forth below the end mill to make a long hole into the sides of the piece.

4. Switch the piece into position so the top or bottom is facing up. This is the position you should use for milling straight down into the piece.

5. Check the length of the end mill and make sure it is the correct size for the job. Use the shortest mill that suits your needs for the best result.

6. Lower the mill into position above the piece. Bring the mill down through the metal until the bit comes through the other side to complete the hole.

Tips & Warnings

• Use various bits like mills and drills in one machine to complete a full job on one piece of equipment.

References

• NMRI: Using an End Mill
• Stanford: Milling
• Master Cut Tool: Endmill Basics