The greatest logjam in the gumprinting process is waiting for the developed print to dry. Several years ago I started doing most of my printing on plywood, aluminum, and other non-absorbent substrates. With a hair drier clamped onto a tripod aimed at a slanted print, and working on 2-3 prints, you can literally have a dozen prints completed in a day. I've done it. Lately, I've reverted back to doing smaller prints on paper, and the process I've adopted to keep things speeding along is to use the very thin and inexpensive Masa paper drymounted to sheets of aluminum. The paper is so thin that it dries VERY quickly. No drymount press? You can still enjoy the speed of this paper by using a flexible support such as aluminum or plexiglass to grab the paper out of the water. As the paper clings to the surface, you can hang it up and dry it with a hairdryer, removing the paper and hitting it from the other side when the time is right (carefully! as the paper is as floppy as a paper towel!) Although I usually rip a 21x31" sheet into quarters, I have full sheet prints using this process.