For wet plate collodion process, the plate has to be developed before the collodion get dries up. Therefore an wet plate collodion darkbox is essential for outdoor shooting. There are many designs for a darkbox that can be found  online but  I opted for a briefcase design as you can see in the video below.

The dimensions of my darkbox when closed are 29″ x 22 ”  x 5.5″ making it a very compact size. It is constructed out of plywood and hardwood pieces without any fanciful woodworking joints. The wood pieces are simply joined together using screws.

Let me know if you have any questions.