The dirty room is the place for all the tools and processes that inherently produce a lot of waste live. Conventional cutting tools (i.e., not the laser cutter), the welding setup, and the CNC cutter currently reside here. It also holds most of the hand tools that would be used in carpentry or heavy mechanical work, such as hammers and large screwdrivers.
Safety gear for the various equipment, such as masks and welding coats and gloves, are also kept in this room.
There is a garage door in this room that can be opened for additional ventilation or outside access, but depending on the weather, it may be a good idea to close the door to the rest of the space before opening it.