An Indian wet grinder (something like this: http://www.buyindiankitchen.com/premier-wonder-grinder.html) will get pralines or chocolate very smooth with enough time. A robot coupe or thermomix or equivalent will not be able to produce the same smoothness.
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An Indian wet grinder (something like this: http://www.buyindiankitchen.com/premier-wonder-grinder.html) will get pralines or chocolate very smooth