I have just completed my DIY ring flash. I think it turned out great, plus the cost was less than $20.00 This flash was made with Home Depot materials, and things laying around the studio.
The main component consists of a 10.5 inch utility light made of aluminum and a 4 X 5 inch heating duct coupling. The mounting system is fashioned out of fittings laying around the studio. Small ball head, flash shoe, Bogen mounting plate from a flexarm that I had and small stud. Of course there is the red paint!
This ring flash is just another tool the have up your sleeve if you need it. This ring light is very lite weight, less than the weight of the PVC one I started to build before finding the parts for this version. I fire the strobe using the Nikon SU-800 command unit. The complete ring flash is comfortable to handle and as I mentioned earlier, very lite weight. One other great thing, it comes in any color you want!
Here is a close up of the parts I fashioned together for the mounting system. I'm going to be making another one for my intern and will be photographing the entire process.
The black gaffers tape is used to cover the rough metal joints between the heating coupling and the main dish. The diffusion material is made from a product I bought sometime ago from B&H. It is a heavy plastic type of material, we use to use this stuff when we made our soft boxes before there where commercial boxes available.
Thought you might enjoy seeing my new toy. I really don't have any plans on using it just yet. Kinda fun.