Span one large image across multiple printed pages
I was looking for a way to print a large image across multiple pages, so I could make my own do-it-yourself poster-size printout. By way of background, I wanted to print a huge virtual fire, to cover a piece of insulation we put in front of a drafty fireplace in the winter. (We don't like to burn wood, so the fireplace goes unused, but staring at a piece of shiny foam insulation all winter isn't all that interesting.)
Conceptually, this seemed pretty easy: find a huge image, open it in some app that handles images, and print. What I found is that doesn't work, at least not in the apps I had at hand (Acorn and Preview). After some web searching, I stumbled across an odd but effective solution: use Excel.
Open a new blank Excel workbook, then select Insert > Photo > Picture From File, and select your massive image. Now when you hit Print, you'll see the output spans multiple pages. I used Page Setup to select a borderless US Letter size, and printed out 16 pages of a roaring fire.
After some cut-and-tape operation, the drafty fireplace's insulation became more visually appealing:

Note that this was a "proof of concept" operation, so I printed in draft mode (hence the vertical striping on the printout) and wasn't overly careful about lining up the pages. I had originally planned to print the final version on glossy photo paper, but instead opted to buy a 36x48 poster-size printout from an online vendor. (I haven't yet received the print, but when I do, I'll post about its quality. Until then, though, I don't want to link to the vendor, as I don't yet know what I've bought.)
I knew Excel could do a lot, but I never thought to try it for printing huge images across multiple pages.




When you have two drives in iTunes, you'll see one CD icon in the iTunes 12 bozo bar—that's my name for the row of device controller buttons seen at right.

