Cargo Ship. It occurs to me I maybe shouldn't start with a TVTropes link, because it'll now take hours for you to get back here. Regular readers will remember that I'm asexual. Well. I have found true beauty. It is in precision. In my machine tools program, I am spending basically a part time job worth of time each week shaping metal to my will. I am using machines that have the ability to be more accurate than any of our tools can measure. I can create physical objects exactly to theoretical specifications. There is love, and it is in picking up a knurl so precisely you can't tell where it left off.
Now, despite the trope, no. There is no having sex with a lathe. The best possible result isn't all that great, and the worst is absolutely horrific.