Dual gear drive lubrication
Those cheap(15-20€ from banggood at the time of writing) dual gear drive extruders are pretty useful. They grip the filament very well and prevent sliping, they also almost necessary for flexible filaments. They are also more durable than the plastic ones included with most creality printers (like my ender 3), the stock plastic ones have the tendency to crack. While it is an easy and affordable upgrade it has one issue, it lacks proper lubrication. I had mine for about two years before it started doing a clicking noise and soon a loud clunking noise, it has especially noticeable during…