Abstract

This is a modified design of the three-arm extruder knob customized for the Ender 3. I've transformed it into a Z-axis knob. Originally, having two different knobs made me feel anxious like a perfectionist, but now just one is enough. When printing, there's no need to use support structures or a build plate. It's recommended to set the infill density to 60%. This not only saves more material but also leaves more space above the top guide rail, improving printing accuracy and stability.