I did this one because I rarely draw anything mechanical. If you look at my previous post you can see that the attempt at stereos were rather haggard. I didthis one so that the mechanical object was the focus of the picture. Sort of a supplement to all the figure drawing. I found that I can indeed draw straight lines with the tablet if I try. I was just being lazy and ignoring backgrounds. So next time I'm being lazy and not wanting to draw a table or something I can just look at this one and make myself do it.
This is all photoshop with a wacom tablet. Probably excessively overlaid with texture, but that how I like to do things.