spur gear 3d model

A functional spur gear designed for 3D printing material testing. Specifications: - Spur gear with 60 teeth - Standard involute tooth profile - 20-degree pressure angle - Module approximately 1.6 - Outer diameter approximately 100 mm - Face width (thickness) 10 mm - Center bore 10 mm diameter 3D printing requirements: - Flat, perfectly planar bottom face with no chamfer or bevel - Bottom face aligned exactly to Z = 0 - Top edge may include a small chamfer (0.5 mm) - Fully solid, watertight, manifold geometry - No internal shells or floating surfaces - Designed to be printed flat on the build plate without supports - Export in millimeters as a dimensionally accurate STL