This is a concept design for an aquatint box, based on the following features:  powdered rosin is deposited on the bottom of the box, where it is stirred up by a fan blade driven by an electric motor whose shaft projects through the floor of the box.  This creates a "doughnut" shaped airflow within the closed box, which suspends rosin particles in the airspace within the box.  There is a door and a grid just above the fanblade where a plate can be inserted after the fan has been turned off to allow rosin particles to settle on the plate.  When an adequate accumulation of particles is on the plate, it is removed and heated to cause the particles to melt and stick to the plate.

Materials required are plywood for the top, sides, and floor of the box; metal (or wooden) bars for the plate support grid; cabinet hardware for the hinges, latches, and handle of the door, and the major electrical components: the fan blade and motor and associated wiring and an on/off switch.  Some foam rubber weatherstripping will be necessary for closing gaps around the door so rosin dust won't blow out when the fan is running, and some aluminium flashing for rounding the corners formed where the floor and the walls of the box meet, so rosin powder won't pile up in the corners. Also whatever glue, screws, etc. may be necessary.  I have built these with 5/8 in plywood joined with drywall screws, but details of construction will depend on the size of the box, available materials, and the tastes of the builder.

A box based on this design has been in use since about 1986 at Island International Artists, a printmaking and distribution facility located on Guemes Island in northern Puget Sound.