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Is there a device you can get to sharpen the milling heads when they get dull? |
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Once the sharpening heads wear down they'd have to be replaced I'm afraid. |
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I've heard people say that punching aluminum foil sharpens a hole punch. I can't quite figure out how this would actally help, but if it makes them feel batter... |
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Maybe since you have a dull hole punch (I'm assuming that's why you came up with the idea) you could try it and report back. |
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Based on [scad]'s idea, I'll try foil and sandpaper and see if I can spot a difference. |
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put it under a pyramid over night |
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The hole punch industry is running scared. This invention could really cut into their sales. + |
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There are a few three-hole punches on the market advertised as self-sharpening. |
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The only reason that this is a two head sharpener, is that is the most common type in the UK. For a reason I've never been able to fathom, we have either two or four holes in our paper here and in the Americas three is far more common. |
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What's needed is a comprehensive sharpening method experiment. I'll have to buy several cheap hole punches, blunt them and then try all the suggested sharpening methods. I'll leave one untouched as a control. However; if I get a life, this may be put on hol(e)d. |
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Why would you want to get a life? Results are what matter, not friends or daylight. |
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