CR-10 extruder knob with a differece

thingiverse

An innovative extruder knob design has been engineered, featuring a unique mechanism that resists slipping off the shaft with ease. The primary drawback of traditional plastic knobs lies in their inadequate strength at critical points and oversized dimensions, resulting in excessive rotation on the shaft. The new design obviates the need for large knob sizes, as the shaft turns smoothly anyway, while also incorporating an indicator point to facilitate effortless observation of knob rotation, particularly during extruder retraction cycles. Underneath the knob, two slender slots are strategically positioned. Here, users can securely fasten two square metal plates, measuring 10mm by 10mm and approximately 0.5mm thick. These plates can be easily cut from a dog food can lid or similar materials. Ensuring they remain flat is essential. To incorporate the steel plates into the design, simply place the knob upside down on a hard surface and hammer in the metal pieces. This reinforcement provides crucial strength to both sides of the hole: one plate engages with the flat area of the shaft, while the other secures the opposite side. It's worth noting that most plastic knobs require additional support. The flat area on the shaft aligns perfectly with the pointer on top of the knob, making it easier to identify when pushing it onto place. Peter from Key 3D hopes this information proves helpful.