ergonomic brush 3d model

Create a dimensionally controlled, manufacturing-ready 3D CAD model of the complete LUMÈN UNI-BRUSH based on the reference image. Model the entire assembled brush with one coherent premium ergonomic form, not generic brush geometry. Overall height: 120 mm. Handle maximum diameter: 18 mm. Bottom diameter: 18 mm, flat. Bristle head: 28 mm wide × 18 mm deep, with 18 mm bristle length. Handle has a smooth hourglass ergonomic profile with rounded transitions and matte-black ABS/TPE appearance. No hanging loop, no bottom logo. Create a dense tapered PBT bristle pack with a clean PP collar and realistic outward flare. Include a concealed internal cavity for a stainless-steel balance weight. Use clean, symmetrical, smooth manufacturable surfaces, realistic injection-molding wall thickness, fillets, and 1.5° draft angles. Add “LUMÈN” vertically on the front center of the handle using Montserrat font, uppercase, metallic gold finish. No other text or logos. Prioritize exact dimensions,