Prepare to Drill Metal : How to Use a Center Punch : 5 Steps (with Pictures) - Instructables

Prepare to Drill Metal : How to Use a Center Punch: This is one of those 101 topics that I feel could use some exposition so drilling holes in metal can be a confident, well-informed, and efficient experience. A center punch is a tool with a pointed end that makes a dimple in your piece of materia…

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Super Simple Center Punch : 3 Steps (with Pictures) - Instructables