If you want to remove the peels of nuts easily, then you should soak them in hot water. After that, add a bit of salt in order to neutralize the enzymes and remove tannins and dust residue.
Be careful not to reuse the water residue as it might contain dangerous substances.
Nuts, like grains, have phytic acid which is part of their defense mechanism to prevent predators so that they can fully mature. This acid inhibits the easy digestion, due to which you can often notice bits of nuts in the stool.
When soaked, they lose the phytic acid and their enzyme inhibitors are neutralized which means that their consumption helps digestion and boosts the absorption of vitamins and other nutrients.
This is the time you need to soak nuts:
