centrifugal fan impeller 3d model

Create a modular 3D-printable centrifugal fan impeller matching the reference photos. Make 10 separate parts: one 63mm circular base, one central hub with a 4mm shaft hole, and exactly 9 identical curved blades. Each blade must be separate, removable, and identical in size, thickness, height, curvature, and shape. Space the 9 blades evenly at 40 degrees. Blades are tall and strongly curved, forming a deep 3D centrifugal impeller, not a flat propeller. Base thickness 1.5mm, blade thickness 1.5mm. Add precise slots or dovetail connectors so every blade securely locks into the base and hub like LEGO pieces. Keep all parts clean, solid, watertight, and optimized for FDM 3D printing. No broken, missing, shortened, or different-sized blades.