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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
Use a sharp cobalt drill bit that’s designed to cut steel. Make sure the metal you’re drilling is held securely in place (e.g., with a vise), and never try to drill a piece of steel while holding it in your hand. Use low speeds and make sure the bit and metal are well lubricated with oil (such as 10W30) to prevent overheating. Always wear appropriate safety gear, such as work gloves and safety glasses.
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