I built my DIY Ring Flash back in March by following this YouTube video
I couldn’t find a work lamp as big as his though so I used one that was 2″ smaller. After some testing I found the “ring look” wasn’t quite what I wanted so I started all over will a 15″ stainles steel salad bowl and a 6″-to-7″ air duct spacer. I bought two flexible plastic cutting boards from Le Gnome and cut them for diffuser. Finally I painted the whole thing black to add baddassedness.
The light works great and is powerful with two speedlights pumping into it BUUUTTTT…. it’s soooo heavy! And goofy looking. A kid once litterally asked me if it was a time machine! I think I’m going to eventually buy one of those Ray Flashes but for now I’m happy that this thing cost less than $30 to build.