608zz roller for 2020 extrusion

thingiverse

Updated model to include flanges that securely keep the bearing in its place. This creation was made with Tinkercad, and you can edit it online at https://www.tinkercad.com/things/0K8cLDM4vRc. The ideal printing method for this roller is using flexible filament. I've achieved successful results by using flexible PLA, printing at a heatbed temperature of 55 degrees Celsius and a nozzle temperature of 215 degrees Celsius. A print speed of around 30mm/s is recommended, with half the speed used on the first layer. The perimeters of this roller are relatively minimal, requiring a fairly accurate printer to achieve precise results. The roller fits a 608ZZ bearing, giving it a diameter of 25mm. The inner diameter measures 22.5mm, which ensures a snug fit for the bearing when forced inside the roller. On an accurately calibrated printer, these rollers can be used as replacements for delrin rollers.