When drilling into thin sheet metal, here's how to proceed safely, keeping in mind that you're in North Carolina:

1. Personal Protective Equipment (PPE): Always wear safety glasses to protect your eyes from flying metal fragments 2, 3, 11, 12, 13. Gloves, a hard hat, and protective shoes are also recommended for comprehensive protection 2, 11, 12, 13.
2. Work Area: Ensure the work area is clear of personnel before you start drilling 2, 11, 12, 13.
3. Securing the Material: Properly secure the sheet metal to prevent it from moving or vibrating during drilling. This can involve using clamps or a vise.
4. Pilot Hole: Start with a pilot hole using a smaller drill bit. This helps guide the larger bit and prevents it from wandering or grabbing the metal.
5. Drill Speed: Use a slow to moderate drill speed. High speeds can cause the bit to overheat and potentially shatter, or cause the metal to deform.
6. Lubrication: Apply cutting oil or lubricant to the drill bit and the sheet metal. This reduces friction and heat, extends the life of the drill bit, and creates a cleaner hole.
7. Drill Bit Type: Use a drill bit designed for metal, such as a high-speed steel (HSS) bit or a step drill bit. Step drill bits are particularly useful for thin sheet metal as they create clean, round holes without snagging.
8. Pressure: Apply consistent, moderate pressure. Avoid forcing the drill bit, as this can cause it to break or damage the metal.
9. Deburring: After drilling, deburr the edges of the hole to remove any sharp edges or burrs. A deburring tool or a larger drill bit can be used for this purpose.
10. Ventilation: If the drilling process generates dust, ensure adequate ventilation, especially if the metal contains any potentially hazardous materials 4, 5.

General Safety Practices:

• Inspect Tools: Before starting, inspect your drill and drill bits for any damage. Do not use damaged tools 6, 7.
• Proper Tools: Always use the proper tools that are in good condition and suited for the job 6, 7, 18.
• Clean Up: After the work is completed, store all tools properly [1].

Important Considerations for North Carolina:

• OSHA Compliance: In the United States, including North Carolina, comply with Occupational Safety and Health Administration (OSHA) requirements [2]. These requirements can be found in '29 CFR 1910' which covers general industry standards.
• Waste Disposal: Dispose of any waste oils, fluids, lubricants, filters, and other hazardous waste properly, in accordance with government environmental laws and regulations 4, 5, 14.