Bob Loblaw has had about ten of these cheap halogen work lamps over the years. They look like a steal in your local hardware store, only to find out later that the bulbs they require cost almost as much as the unit itself. Not only that, but the lamps get hot as hell, use a lot of electricity (Bob guesses), and the bulbs are fragile and cannot be touched without gloves or some other barrier lest ye oil up and damage said expensive bulb. Aside from that, they are handy to have. So here's an instructable to convert one of these units into a CFL lamp that puts out almost as much light, with far less heat, longer lifespan, and less energy consumption.
Step 1: What you'll need
For this project, Bob assumes that you have one of these types of lamps gathering dust in your garage or closet because you were fed up with paying $15 for a little bulb. To get started, you will need:
A standard light bulb receptacle, Bob found a rubberized one at the store for $4.95 that already had the wires attached.
An "L" bracket, about 1" on each side, a pack of four runs about $3.00
A hose clamp, about 1.5" diameter (big enough to fit around your light bulb socket)
A metal hole cutter, sized to match the diameter of your light bulb socket
Drill & bits
Nut drivers (if you have them)