What I've been trying to do is get 8 X 12 prints on matte paper without wasting a bunch of paper. This way I can print without cropping the image. So I started with Epson Ultra Premium Presentation Paper Matte in 13 X 19 (A3 +) size. I just like the color tones of this paper. You could use any similar paper. As soon as you select the Media Type for matte paper, you are limited to Paper Sizes that force margins. I chose Other Fine Art Paper 1 and the A3+ with margins.
Then to avoid using the whole sheet, I entered 1.200 for the Top in the Layout settings tab. I cut the 13 x 19 paper in two (at 9.5 inches) and loaded in the Manual feed. This worked out perfectly. I can now get two 8 X 12 prints out of one sheet. I attempted to get 9 x 13 but that doesn't workout since you can't print edge to edge with this paper. You cannot print closer to the top than 1.2 inches, the printer will not go any closer to the top edge on this paper. Then I cut about 1/2 inch off the top to get even margins. This size print will mount in a 16 X 20 frame, which gives you a generous margin. A custom frame would be nicer to control the margin. So if anyone else is wanting 8 x 12 prints, this worked for me.
