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RE: TIL Why We Call Schematics ‘Blueprints’
And it is such a pretty blue.
The blue print had a very short life. Then came blue line (ammonia developed). Which was around for a mere 30 years before plotters came along. And now, it is just easier to print another set of plans then to use any of these old copying techniques.
Well, blueprints started giving way to blue lines called 'whiteprints' around the 1940's, 90 years is a decent run (1861-1940's). Heck, it is getting more common that there are no printed schematics and everyone is just using pdf files on their iPads and such. :D
It has resurfaced as a boutique niche of art, but I am unsure if they use the old process or just print it with blue ink.
I am pretty sure that the new stuff is printed with blue ink.
An actual blueprint has a feel, a fuzzyness of edge of line, its paper is thick, etc.
The paper had to undergo being washed. We just don't have that kind of paper any more. (Well, you can go buy artists paper, like specifically for watercolors).
If you get your hands (or just eyes) on a real blue print, it just has so much more depth in it.
The prints I have seen in stores are printed.
Yea, that was my guess but I hadn't seen an actual one with my own eyes.