There is a well-established tradition of making and iterating upon designs of 3D printers, but...Has anybody thought "I am going to make a 2D printer"? This feels like a gap. Sometimes, I just want to compose a letter to my grandmother or do little a mail merge, as a treat. Expandability would be great; Centronics, RS-232 and RS-485 interfaces would be fantastic, with maybe an embedded PostScript.
