1, The instructor passed out free copies of Broderbund's "3D Home Architect Deluxe" at the last class. I haven't opened it yet as I am learning to use autocad before complicating things. Good tool, or a toy? 2, I used to think that drafting accurate representations of threads was an enjoyable part of the art of drafting, but in class we only lay a hidden line for the max and/or min diameters of a threaded hole, and haven't drawn a screw yet. I can't even find a hatch that represents it. Are threads a thing of the past?