precision encoder wheel 3d model

Design a professional mechanical 3D model for a precision industrial measuring wheel system for a large-format printing material counter. Main wheel specifications: Outer diameter: exactly 100 mm Thickness: 12 mm Central bore: 8 mm diameter (for metal shaft) Include 2 M4 radial set-screw holes for shaft locking Material: PLA or PETG printable Balanced geometry for stable rotation Encoder disk integrated into the wheel: 40 evenly spaced rectangular slots Slot width: 3 mm Slot depth: 10 mm Slot spacing uniform (9 degrees between slots) Slots go completely through the disk thickness Ensure clean edges for optical detection Maintain structural integrity Sensor support bracket: Integrated rigid bracket attached to wheel housing Designed for standard optical slot sensor module (5 mm slot width typical) Adjustable sliding slot for sensor alignment (±3 mm tolerance) Two M3 mounting holes spaced 20 mm apart Sensor aligned tangentially to slot disk Maintain 1–2 mm clearance between sensor and disk