Parts and Build:

I bought an antique knife switch off eBay as a decoration. When I got it in the mail, I knew I wanted to make it actually work. ?But I needed to make it safe. ?So I used a solid state relay and a phone changer to wire everything together. ?You can watch the process in the video above. ?I got everything to fit inside of the light switch box, so I didn’t need to drill into the wall.