Thumb Nut for 1/2" rod

thingiverse

To expedite a demonstration at school, I employed Tjhj's scad-generated threaded rod but found it too small. I adapted the design to fit over a standard 1/2-inch nut. The printed item on my MakerBot Replicator 2 featured no raft or support, with a layer height of .15mm. It was snug around the nut and slightly extended past it, allowing another nut to be locked against the original nut in a thumb nut scenario.