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What type of whetstone should I use for sharpening knives made of VG-10, A2, D2, S30V?

More specific, for each step (grinding/sharpening/honing):

  • what kind of whetstone: natural or artificial? If artificial, what type of material?
  • what kind of bonding material? or no bonding material at all for specific grit ranges?

P.S. If you know some other place where specific models of whetstones (and their recommended usage) are discussed, please leave a comment. All I have found so far are some vendor sites, and nothing relevant about practical usage.

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Buying recommendations are off topic across the whole network, see Is there something you want to ask here except a brand recommendation? If yes, please edit the question, else it will be closed. – rumtscho Jun 16 '12 at 15:40
If you want to buy a stone, it is fine to ask what you should look for in a good stone. After you have narrowed down your choice, and like a stone but don't know if it has a feature X you want (and the manufacturer doesn't offer the info), you can also ask "does stone Y have feature X". The rule is not to ask questions like "Which brand/model of stone should I buy" or "Which brand/model is the best", they are unanswerable at best and a seed for a flamewar at worst. The way you edited your question is good; if you want to add more info without changing the main question, it's OK. – rumtscho Jun 16 '12 at 16:54
There are nice discussions here and here on how to sharpen knifes. Related in a way to your question. – BaffledCook Jun 16 '12 at 16:58
@BaffledCook: thank you, from your links I have arrived at… – alexandrul Jun 16 '12 at 18:12
@rumtscho: thank you very much for your patience and the effort to educate me. – alexandrul Jun 17 '12 at 15:40

For the honing stage, I have found an article regarding belgian natural stones: How does a Belgian Blue Whetstone compare to a Coticule (without any reference to a specific steel type)

In summary:

  • the yellow stones (Coticule) are much better than BBW if using slurry
  • using just water, without slurry, BBW is almost useless and Coticule is very slow
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