The author remixed this model.
First things first: All honors go to Make-A-Print for this amazing design. It gave me much joy to build. Thank you.
What is different in this remix?
I changed the wall mount. In this remix you'll see that the wall mount is slightly tilted. That way you can let the hand hold more objects, because they rest better in the palm of the hand.
Not a major change, but it does help a bit.
For further assembly instructions I recommend you check the original model. All is explained here in detail.
I hope you have as fun with this hand as I had.