CR-10 extruder knob

thingiverse

An innovative extruder knob design that resists slipping on the shaft. Unlike traditional plastic knobs, which are prone to wear and tear due to their weak points, this one boasts a robust construction that ensures secure grip. The large size of standard plastic knobs often leads to slippage, causing them to turn on the shaft instead. This knob doesn't require an oversized design since the shaft turns smoothly anyway. Additionally, it features a visual indicator point, making it easy to monitor its rotation, particularly during retraction cycles. This is beneficial when the extruder needs to retract quickly and precisely. Notice two thin slots beneath the knob; these are designed for installing two 10mm x 10mm metal plates, approximately 0.5mm thick. You can fashion these from a dog food can lid or similar material. Ensure the plates are flat before inserting them into the slots. Sit the knob upside down on a hard surface and hammer the metal plates into place. The steel plates add significant strength to the knob, with one plate gripped by the flat on the shaft and the other strengthening the opposite side of the flat. This modification enhances the overall durability of the knob, particularly around the weak points where plastic knobs typically fail. The alignment of the flat on the shaft with the pointer on top of the knob facilitates easy installation. This design has worked exceptionally well for me, eliminating slippage issues on the shaft. I hope this solution proves helpful to others as well.