spur gear 3d model

A small rotating wheel designed for a string instrument mechanism. The wheel is shaped like a coin or disk, with a central hole for mounting on a motor shaft. The outer circular rim (edge of the disk, not the flat faces) features evenly spaced triangular teeth shaped like guitar picks. The teeth protrude outward from the circumference, not from the flat sides. Each tooth is angled slightly backward relative to the direction of rotation to create a smooth but aggressive plucking motion. The flat faces of the wheel remain smooth and clean, with no teeth or spikes. All teeth are positioned only around the outer edge, like a gear or cog but with pick-shaped teeth. The teeth are thin, slightly flexible, and have slightly rounded tips to prevent harsh scraping. The material appears to be a matte soft polymer such as TPU or rubber. The wheel diameter is about 20–30 mm and thickness 5–8 mm. The design is symmetrical, precise, and optimized for high-speed rotation and continuous contact with a string.“Do not place t