I often find myself doing drawings on large paper stock, 12" x 18", 18" x 24", or 24" x 36" are common for different things I do. (As a fantasy writer I sometimes find myself spending more time laying out and editing the world and key details of it than I actually spend writing.)

But one annoying problem is trying to scan things this large. I've often considered ripping apart an older flatbed and rebuilding it as a custom wide body scanner (Designed like a wide plotter, where it moves the scanning head up and down the page, and then moves the page left/right as needed. Actually if I did this route I might look into making it a scanner/plotter,...)

But I figured a device for scanning something as large as 4'x6' already exists, the only question is where can I get something like this, and will it cost me more than everything else I currently own. (I'm a student,... so actually that wouldn't be all that much.)