Filament hook mount for PrintrBot

My first 3D printed design, and a standard rite of passage -- a filament hook for my printer.

Unlike many of the ones I see on here, I wanted one where I could attach a bolt or additional mount of my choosing, so this just provides a 1/4" hole for a long bolt.

It fits snugly enough that I had to label it "not a handle", lest someone try to carry off the printer with it...