napkin holder 3d model

Create a 3D printable napkin holder with a semi-cylindrical double-arch shape, similar to a half-cylinder resting on a rectangular base, with a central slot for napkins. Overall dimensions: 180 mm (length) x 60 mm (width) x 80 mm (height). The model must be optimized for FDM 3D printing while preserving a realistic crumpled paper bag texture. Printing constraints: Uniform wall thickness: 3–4 mm Flat, stable base for bed adhesion No overhangs greater than 45 degrees Smooth fillets (2–4 mm radius) on all edges Watertight, manifold geometry No thin or fragile features Shape: Two symmetrical curved outer walls (double arch), clean and minimal form Central slot (15–20 mm wide) running along the length Smooth inner surfaces for functionality Texture (VERY IMPORTANT): Apply a crumpled paper bag texture ONLY on exterior surfaces Texture must be shallow and low-frequency (soft folds, not sharp wrinkles) Maximum texture depth: 0.5–1 mm Avoid sharp peaks or deep creases that would require supports Ensu