This fixed base is crafted from high-strength AL7075-T6 aluminum alloy and precision-machined using CNC technology. It features a compact, symmetrical U-shaped design with a central through-hole for securing the shaft. The side walls are thick and of uniform height, and the top edges are chamfered to relieve stress. The base surface is flat, with a set of countersunk threaded holes at both the front and rear for secure installation.