Also I was trying to find a way to present things without the classical glass frame that I hate. So I glued the paper to an MDF board with a wooden frame on the back that prevents it from buckling, It's really lightweight and when I slip it into a custom made frame it shouldn't weight more than a glass frame, possibly less.
Now with paper it's easy to scan even bigger items like this (50 x 70 cm). But in this case, you can't get the surface close enough to the glass:
So I took a photo, but of course I only have a bridge and no proper lights, so that also doesn't work
The real thing is somewhere in between but not really... OK this will take more testing.