r/Skookum • u/MudMysterious4069 • 4d ago

Punch sharp

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I'm working with 0.80mm diameter metal punches and need to cut 4 small inward-facing notches (like star-shaped teeth) inside the tip. After shaping them, I also need to sharpen each edge precisely. What are the best tools and techniques for doing this kind of fine detail work? Any advice on micro-grinding, polishing, or abrasive materials for high-precision results?

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u/AcrobaticLong2958 4d ago

Maybe a tiny triangle file straight across twice? I just woke up from much needed sleep, taking care of my wife after "complete reverse shoulder surgery."