Reply by MrRon

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Posted on which diamond stones for chisels and hand planes blades

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5954 posts in 4155 days

#1 posted 10-27-2018 01:56 PM

Water should be used on diamond plates and water stones when sharpening. The purpose of sharpening with water, regardless of material is to wash away metal particles. Diamond plates when used dry will clog and that will lessen it’s sharpening power. Diamond was originally meant to sharpen super hard materials, like carbide and HSS. Ordinary steel used in plane irons and chisels is soft and will clog a stone, any stone unless used wet. Diamond plates are great as a “touch up” after regular sharpening. Diamond will remove a lot of material fast, sometimes too fast. I use diamond to sharpen my kitchen knives and I found that I was doing it all wrong. I was going at it too aggressively and wondering why my knife was not getting sharp. I finally realized, that I was getting a sharp edge with 2 or 3 strokes, but when doing additional strokes, I realized I was making the knife dull, by removing the original sharp edge.

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