Dremel Footswitch
For some inexplicable reason Dremel does not make a cheap, widely-available footswitch for their hand-tools.  This is all the more outrageous given where they placed the switch: on the side of the tool!  Not a trigger, not a push-button near the tip (which would be accessible when doing the "pencil-grip" thing).  Naturally, I went in and made my own to remedy the situation. 

It's a simple enough set-up:

The box connects to both the Dremel and the wall socket supplying the power.  The footswitch, when pressed, completes the circuit.

project box $3.00 Radio Shack
wall socket $0.50 hardware store
plug  $0.50 hardware store
1/4" mono jack* $2.00 Radio Shack
1/4" to 1/8" adapter* $2.00 Radio Shack
footswitch $5.00 Radio Shack
wire (duh!) $0.05 your garage
Total cost About $13
*Note: You could go with a 1/8" jack and skip the extra step of the adapter, but 1/4" inch jacks are invariably sturdier.  In fact, odds are you have an open, guitar-type jack lying around already.

On the outside looking in
This is what it looks like inside when the back of the project box is removed.

As you can see from the picture, I didn't do such a neat job, but it works. 

Honestly, I don't think this is rated for the amount of current a Dremel pulls, but 

1) the current isn't constant, 

2) I'm always present when it is in use, and 

3) I don't leave it plugged in when I'm not using it. 

Copyright Alexplorer.