Double Reed Edge
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Chattering Solutions

Knives that tend to chatter include: Rigotti, Nielsen, Chiaruggi, Chudnow (regular) and some Vitry 
  - this seems to occur due with the composition of the metal and the type of hardening used

Here is solution that gives very good results:

Use a coarse flat diamond stone to create a burr (on both sides of the knife)
If you have multiple diamond stones, after you create the burr with the coarse stone, create a burr with a finer stone also.
A good source for diamond stones is Harbor Freight. 
  - these are a block of four stones 200-600 grit and come with a holding block
  - these are very reasonably priced (under $15)

After creating the burr, sharpen you knife with the 800/1000 diamond stones on your Wicked Edge sharpener.

Sharpen with finer stones that you may have (800 and above)

Finish by stropping

​Set the burr using a sharpening steel or other method