When grinding flaxseeds in a coffee grinder, is it safe to add some water inside? http://www.drdavidwilliams.com/how-to-relieve-constipation-naturally/ says


  Flaxseed is inexpensive and you should be able to find it at your
  local health food store. Keep in mind that if the seeds aren't
  crushed, ground, or broken, they will pass through your system intact
  and you'll lose the benefits. Except for decorating the outside of
  bread loaves or muffins, I would recommend grinding the seeds in a
  small food processor or a blender. Small, inexpensive coffee grinders
  also work well for this purpose. (If you intend to use a blender,
  adding a bit of water or liquid to the seeds will make the blending
  process much easier.)


When using a coffee grinder to grind flaxseeds, is it also advised to add some water to the seeds? Or will adding some water cause danger and damage to the coffee grinder due to short circuit caused by water?

My coffee grinder is KRUPS F203 Electric Spice and Coffee Grinder with Stainless Steel Blades, 3-Ounce, Black:
Coffee grinders are designed for dry grinding, not wet grinding. The mention of water in your quote is for a blender, not a grinder. There are also wet-dry grinders, but that's not one.

So, I'm not sure if it's actually dangerous, but it's certainly not designed to have water in it. And either way, since it's not meant for wet grinding, it's not likely to grind wet things well.

Blenders, on the other hand, are designed for liquids, so it makes sense that blending a slurry might work better than something dry.