Having built a few already, he designed and built an SLA/DLP 3D printer, named RooBee One, sharing the plans on Instructables. He also published tons of other stuff, like a 3D Printed Syringe ...
It works by pressing the edge of three bearings ... Eliminating backlash is awesome for a 3D printer, but it’s not obvious how a thread that gives under excessive load is a plus, unless you ...