Stream Water Wheel

A slow undershot timber water wheel 3m across on a stubby stone-and-timber bearing frame with paddle boards, a stub axle and a short flume trough on one side, the wheel modelled as a separate spinnable ring so it can turn in engine.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit