Comment Re:3D printer (Score 1) 266
Printing usually implies a physical result outside of the computer. 'printing to PDF' would be more of a transformation of content. I would even stretch to say it could be considered a form of publishing to the new format. The only reason it "works" like printing is to take advantage of the uniformity of print driver inputs, thus allowing any format to translate to PDF. Despite being installed as a print driver, it does not print.
As for 3D printing, it is probably unlikely that home use would produce more 3D models on the whole than sheets of paper (taking a model to be one printed thing and say a report to be a traditional printed thing - they may both have sections, but still a single entity). Especially taking into account how short a time home 3D printing has been available.