Prick punch that is anyway. Arguably the most used tool when fab'n in the garage is your center punch. Below, a simple trick to make your punch last longer and wield more accurately. When your punch needs touched up, grind it conically along its axis (Pic #1). The "vertical" striations give it strength. Think of a piece of flat stock; say .25"x2" held horizontally at both ends. With the 2" surface vertical, it resists flexing (or deforming in this case) much more than if you flipped it on its short side. This principal should be applied to everything you fabricate.
Bottom line, grind your punches with a medium grit wheel like in Pic # 1 and you will notice a difference!
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Now I know!
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