How to Make a Gravity Puzzle (Brain Game)

The challenge is simple .. just balance 14 nails on one nail head ... at the same time!
Some quick links to a few of the materials I used:
[✓] Nails:
[✓] Drill bit:
[✓] Stain:
[✓] Finish:
In this project you'll learn how to make a fun little mind puzzle, for giving as a gift, or for entertaining guests. You'll also learn the secret to getting all nails these to balance at once!
Free template:
Endcard Links:
Mousetrap Gun:
Green Slime:
Paper Speaker:
Balloon Cannon:
See What Else I’m Up To:
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WARNING:
If using power tools in this project, adult supervision and adequate training are highly recommended. Misuse, or careless use, of tools or projects may result in serious injury, death, and/or permanent damage to persons, equipment and property. Use of this video content is at your own risk.
While this trick has probably been around since before any of us were born, most people still don't know how do it!
Music By: Kevin Macleod (Riptide)
Project Inspired By:
A family friend showed me this during my teenage years. I never did figure it out myself .. he had to show me the solution, and it's amazingly simple once you know it!
Project History & More Info:
THE RULES: Balance 14 nails on one nail head. The nails can't touch anything except each other, and they all have to be balancing at the same time.