I decided to make one of these today. Great article above. I use a glue gun instead of silicone, i'm too impatient for silicone
I used just a pen case like below. Wire was soldered to the needle and wrapped and glued around the lead.
This it what it looked like glued into the end of some plumbing pipe.
Put a button in the circuit
I used a little DC jack on the end
Some electrical wrap for a handle.
Complete
Now time to kill some things. Also thinking about zapping my roommates when they are noisy hahaha
