I am unfamiliar with the Shapton 12K so I would suggest that you contact someone who uses them. Perhaps MParker?
If you are still up a creek then contact me.
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Sometimes the edge is warped and sometimes it is the spine or both. The solution is the same as I mentioned.
I hope I answered your question.:)
If you have a webcam then we could have a video honing session if you wish.
Randy is a great source of info - and I think the first thing that he mentioned was to lap the stones. That beginning point can't be overlooked. You just won't have any good results if the stone is not flat and the edges smoothed. Let us know how it goes!
Thanks for your suggestions. I just have one more question: what is this I keep reading about rounding the edges of the hone? Am I misreading this?
So...I'll need a 220 or 320grit and something flat, like plate glass or a marble floor tile...?
Yes, rounding the edges a bit (just a bit) protects them - less likely to chip
Glass plate is fine, I just bought a marble tile from Lowes because this was the easiest and fastest I could do.
Most people use higher grit after the rough stuff, too
Cheers
Ivo
Great, thanks.
So, what grit would you recommend for use on a Norton 4/8K?
after that, I'm off to the hardware store...
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After 320 I'd go at least 600, maybe 800 too.
Some guys also use 1000. I have done it, but then decided it's too much hassle, plus I always finish on something finer than the 8K, so I decided I don't really need the 1000
Good luck
Ivo