I had an idea for one of these long time ago, so I built one and found that it is one of my most useful projects that I have ever made, I use it daily right next to my vice so I can direct light just where I need it, just like any other ordinary swing arm light. Mine however has one section from a broken swing arm, so it now has more sideways range, and with the extra arm, it can be directed to my pegboard way up high, or if I should drop something it can nearly reach the floor if you were to drop something and...It can be directed under the workbench. This intire project required a soldering iron and solder, two pairs of plyers and a screwdriver, Aprox 30 min from start to finish.
Step 1: To Start
I took the pink swing arm and removed all except the base and two matching square sections and the triangle. I then removed only the base of the brown swing arm keeping the attached reflector (see pictures)
Step 2: Electrical
The brown lamp already had a switch, but the wires were put together with wire nuts. So I removed the light and pulled some of the existing lamp cord and soldered the socket. After reinstalling the socket I pulled the slack of the cord, leaving enough slack for the bending. Snug all bolts as there is a lot of stresses on them, Make sure springs are installed. I used to use a heavy glass flood light, extra springs were needed to keep it balanced I now I use a very lightweight 60 watt equivalent LED bulb in mine. You now have a really flexible light to work on your instructables.