possibly not one of my brightest ideas ever
If my new printer’s resolution is 1200 dots/inch, then a sheet of gringo-standard letter paper with half-inch margins can take an image of 9000 by 12000 pixels. As a test, therefore, I rendered one of my most complex Povray images at that size. It took 182 hours.
Now if I can find a program that will open an image that big . . . .