This is a very easy to make, inexpensive, durable foot-controlled on/off switch that can control the power on any small tool or appliance, such as a Dremel or other rotary tool, a "Leslie" rotating organ speaker motor, lights, or anything really. We're going to cut the extension cord partway along the length, and add in the switchbox, so that the outlet or outlets at the end of the extension cord are switched on or off when the foot switch is actuated.
Step 1: So Why?
So... Why Do I want to make a foot switch that lets me turn a 110v appliance on and off- specifically a dremel?
I do a lot of project work on motorcycles and motorcycle-shop-related electronics, namely cordless phones which do not survive well in a shop environment. I use my dremel for a veriety of things, at several different speed settings, but the tool has a simple slider on the body to control on/off and speed, and it's aggrivating to have to reach up and slide it all the way off because i need to use that hand to hold something else, and then have to try and get the speed right again 10 seconds later. This way I can just tap a switch with my foot, needing zero hands free to control the power- AND the Dremel can be left at a specific speed setting, with no fiddling around needed to get back to that setting later.