, here's your how-to.
This is the ringlight I have used in some photos
Now for a how-to for those who want to build one:
For reference, I when I built mine.
You'll need a jigsaw. Get 2 2'x4' 1/2 inch plywood.
Lay them on top of each other.
Find the middle and tape a piece of string to the middle and the other end to a pencil/pen and draw a half circle on the plywood and use this as a guide for when you cut out the ring. (you'll need to draw two lines, naturally, the outer and inner)
Once you have your pieces cut, paint it. It'll be easier to do this now than to do it later. This one is painted black on the front to dimish the raw, DIY nature of it.
Next up, buy some sockets for it and screws so it'll they stay in place. You'll need wiring and something to cover up the lose wiring. You don't want any exposed wiring. If your finger touches the wire, you're going to have a bad time. Here is a closeup
of one of the switches on mine.
Make sure to plan ahead and allow for more wiring over the part where the ringlight folds.
Get some L-brackets for the back and attach them with screws. example
. You'd be better off using wingnuts. They're easier to get off/on.
Now for the box. This is what
I used, but make sure the switch you use is rated to handle the amount of power you're running through it, or it'll get hot, buzz, and start a WICKED fire. I had to replace this box with two dimmers (see above) once it started to get hot. That's when I realized I didn't take into consideration how much power these flood lights were drawing.
Have fun, and don't burn your house down!