I’ve been meaning to build one of these for a while, but upgrading my camera and my wife starting her etsy store and needing me to photograph stuff for it gave me the impetus.
Some cheap wood, a scrap of PVC sheeting, a $4 white sheet from the thrift shop and here’s what I’ve got so far:
I’m not getting enough light, and since I’d broken a few bulbs in the past few days I had 3 different types of bulbs in the 4 lights.
I clamped the sheet on because I’m not sure of the best way to secure it, or even if that’s the right kind of sheet to use. The point is to diffuse the light, but I don’t want to block too much of it either.
I may need to partially cover the front of the box  to bounce some of the light back in.