One of the classic spy tools is the hollow coin where our hero (Or nemesis!) hides some microfilm, micro SD card, or a secret message. In real life, this was also used by the Soviets, when they were discovered because they were accidentally spent and dropped to reveal a hidden compartment! (Thankfully, my design does not have this flaw.)
Now, it is easy to see how cool these things are, and I decided to do some internet research. However, they seem to go for about 20.00 US dollars. I think that’s a ridiculous price to pay, especially when we can make our own with some time and money. As a result, I decided to make my own!
You can read on, or you can see the video version (The written version is more descriptive, but if you want the abridged version, check it out)
Step 1: Supplies
Seeing as this is a fake coin I was making, I choose to use the biggest commonly available US coin there is: A quarter. A nickel could also work, but then the compartment would be smaller.
So, in addition to 3 quarters, you will need…
Some info to put in it (A slip of paper, or microfilm, or even a small enough memory chip)
For tools, you will need…
-Dremel motor tool
- Drill and drill bits
- Clamps and vice (To keep our coins from getting away!)
-Solder and Soldering iron
- Hot glue/ Hot Glue gun
-Gloves (For safety!)
And a whole lot of patience. You will see why later, but believe me; it takes a lot of tries to get one of those faces just right.