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 design must combine a clean structural form with a highly pronounced crumpled paper bag texture. Printing constraints (FDM optimized): Wall thickness: 3.5–4 mm for strength Flat, stable base (completely smooth, no texture underneath) Overhangs must stay within 45 degrees Filleted edges (2–3 mm radius) to avoid weak نقاط Watertight, manifold geometry No unsupported floating details Shape: Double-arched form (two curved parallel walls) Smooth continuous curvature like a wooden napkin holder Central slot: 15–20 mm wide Interior surfaces completely smooth Texture (HIGHLY ACCENTUATED): Strong crumpled paper bag effect on all exterior surfaces Deep folds and visible creases, but still printable Texture depth: 1–2 mm (important limit) Use broad, organic folds