FLSun Q5/QQ/QQ-S Arm Spring Mod

thingiverse

This fix addresses an issue I encountered with my Q5, where there was slight play in the ball joints on the arms. This minor amount of play causes the effector to move or rotate slightly between each arm pair, resulting in severely degraded print quality. Moreover, I could hear them rattling around during rapid movements, and I wanted this printer as quiet as possible. Initially, I attempted to rectify the issue by attaching springs directly to the arms. However, I soon discovered that these springs would occasionally creak (as they require rotation) and move up and down on the arms. This would eventually lead to the development of small grooves in the metal and cause a slight amount of binding. To resolve this problem, I designed a new solution that snaps onto each arm, eliminating the need for the springs to ride up and down on the arms. This design allows the springs to rotate more freely. When printing these clips, it is essential to use a material with sufficient flexibility to prevent breakage. PLA may not be an ideal choice due to its rigidity (although PLA+ might work). I successfully printed them using Nylon, specifically Taulman Alloy 910, as this material offers the necessary strength and flexibility without breaking. Please note that when mounting the clips, it is crucial to snap them on in the orientation depicted in the photo. If installed upside down, they will come into contact with the mount when the arms rotate fully to the sides, resulting in additional resistance.