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How can I get the worn and misshaped sharping stones flat again?

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  • How can I get the worn and misshaped sharping stones flat again?

    Have several that were give to me.
    Good ones and expensive ones that I can't bear to throw them away.
    What's the best and fastest way to restore them?
    Robbie
    Robbie

  • #2
    best way imo is to rub them on a concrete slab. Last time this came up a few were worried about getting them really flat.... balls I say, this works well and since you don't use your stone to achieve a state of flatness in the work, it gets them more than flat enough
    .

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    • #3
      Stones

      I put mine in a screwless vise on the surface grinder with a parallel under each end. A few swipes on each side gets them very flat.

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      • #4
        A classic method for breaking that glaze and flattening the stones is to rub them on a scrap of plate glass sprinkled with silicon carbide grit. Water stones can be lubricated with water or left dry, while oil stones should be lubricated with kerosene during this process. I like to use 80 grit silicon carbide for this job, and if I run out of loose grit, I'll substitute the coarsest silicon grit sanding sheets I can find around the shop.


        Cheers,

        Frank Ford
        HomeShopTech

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