My preference with the cyanotype diagrams is to not tinker with the actual image other than the needs of cleaning them up. However, in a few cases the diagrams are such that they make inconvenient fits, or could be made into convenient sizes… or need additional stuff added to them to flesh them out. One such case is the Aerojet Sea Dragon launch vehicle. The diagrams I have come from reports, rather than blueprints; this stripped them of the usual data blocks, and left them with just the diagrams. Putting the external profile next to the internal profile gives an aspect ratio that is *almost* perfect to fit within an off-the-shelf 11/75X36 inch frame. I need to do a bit more to add a bit of something to the blank spaces.
The question here is whether the cyanotype-buying public would rather have this formatted to display horizontally as shown here, or vertically?
As an aside, I just noticed that the original GIF that I’d put together (for APR issue V4N6) was dated as March 9, 2003, just over twenty years ago. I posted the full-rez diagram on my website many, many years ago; since then it has filtered out into the wider world, such as HERE, HERE and HERE.