Offset Herringbone Gear fidget spinner

thingiverse

Note: You'll need support material to print this keychain. When sizing it for your print bed, it works great at a scale of 2 and 1/5 inches or 3 inches. This gear is made up of three separate pieces but prints as one item. It's based on a herringbone gear design, with the top and bottom sets of teeth offset to increase contact points. Once all the support material is dissolved and removed, the gear spins very smoothly. Print Settings: Printer Brand: Stratasys Printer: uPrint SE Rafts: Doesn't Matter Supports: Yes Resolution: .01in Infill: High Density How I Designed This: I used Autocad 2016 to design this piece. First, I experimented with herringbone gears and then changed the way the gears are arranged. Next, I wanted a way to test it and give it a purpose, so I designed a case around the two gears. To make sure the piece is sturdy when using as a keychain, I designed the gear to print freely inside the case.