Turn a Bic pen into a fly death machine.Print, and slide onto the end of a Bic pen. Mine slid on with a little effort to make sure it didn't just shoot off when it was swung.I'll try to get one with a funnel type head soon so that it will work with more pens.Printed with a Solidoodle 2 using Skeinforge and Pronterface. 100% infill to ensure that it had the strength necessary to smite flies.