Because of health reasons I've got to start printing during the daytime and my current dark room frankly isn't up to the task.
I figure I'll push pin my focusing cloth over the window to block any dim light which leaks around the cardboard. That leaves the threshold and door frame of the door (which opens onto a hall way which is dim, but not dark during daytime) A carpet can help the threshold but the frame is my current issue. Any ideas?