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:

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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.

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  • Thanks. Which tool grinds nuts and seeds better, blenders with added water, or grinders? – Tim Jan 5 '17 at 7:15
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    Seems like a separate question, maybe post it as one? But be clear about what you want: it's only really a choice if you're okay with both dry powder and wet paste or slurry. – Cascabel Jan 5 '17 at 7:17
  • Powder or paste doesn't matter. I can add water to powder and then have paste, right? what matters is which way can produce results better absorbed with better health benefits. – Tim Jan 5 '17 at 7:23
  • @Tim Well again, ask new questions as new questions... but we don't do health here, so you're going to have to find another way to define "better". – Cascabel Jan 5 '17 at 7:29
  • I did it. With exactly this grinder, if I recognize the picture. Worked. But I would not advise anyone to do it. It has seal, but it looks more like dust seal than water one. On the other hand, all you touch is plastic so the worst thing that could happen is blowing your fuses, or maybe some fire. Not big deal if you have a fire extinguisher nearby and know that doing what you're doing is essentially stupid ;) – Mołot Jan 5 '17 at 9:26

I can't speak for yours directly but coffee grinders are usually sealed. The dust generated by grinding is bad for motors, and they have to be washed without large amounts of water being held in the mechanism to run down into the motor.

I have a small grinder of this type, like yours marketed for coffee and other things. Mine is in the form of a food processor attachment. It is properly sealed. You could use it as a blender so long as you put it together in the right order. The manual ought to be clear if you can't use liquids as they're marketing it as a spice grinder, and it wouldn't be unreasonable to grind sources with oil for a marinade (for example).

Having looked at the pictures in a bit more detail it seems like you shouldn't use a lot of liquid as there doesn't seem to be much of a seal where the top attaches.

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    I have roughly the same grinder, and with dry things it sprays all over inside, so if you put water in I imagine it'd not work very well as a blender - no vortex, just everywhere. – Cascabel Jan 5 '17 at 16:02

The article you quoted from only says

adding a bit of water or liquid to the seeds will make the blending process much easier

It doesn't say that you have to add water. I have the same grinder as you and mainly use it for grinding spices (it's not really suitable as a coffee grinder unless you like bad tasting coffee).

So, grind the seeds dry and use how intended (either by adding water or adding the ground seeds to something else).

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