aluminum core 3d model

A precise technical 3D CAD model of a solid aluminum core for a chisel handle, designed for sand casting. Geometry: A solid cylinder with a strict 4:10 diameter-to-length ratio. Features: 1. A uniform, smooth and perfectly cylindrical recess (recessed diameter) exactly 3mm deep encircling the middle section of the handle for subsequent rubber overmolding. This recess must have a clean, smooth, non-slotted surface. 2. Two solid aluminum bands (shoulders) at both ends, each exactly 3cm (30mm) wide, which remain at the full original diameter. 3. A centered tapered axial socket present ONLY on one front face (end) for the chisel shank; the other end is a plain, plain solid face. Manufacturing Specs: Apply a 1.2% global scale increase to account for aluminum shrinkage. Include a 1.5-degree draft angle on all vertical surfaces for sand mold extraction. The surface texture is unpolished, matte cast aluminum. Manifold geometry.