square cuboid 3d model

Hard-surface mechanical part, simple geometric block, no decoration, no fillets, no bevels. A flat square cuboid, proportions 7.74 x 7.74 x 3.12 mm. Each of the 4 side faces has a centered cross-shaped cut. The cross is made of one long horizontal groove across the full width and one vertical groove across the full height, intersecting at the center. Groove width and depth are equal (0.72 mm). All 4 sides identical, perfectly symmetric. Sharp edges only, precise industrial CAD look, plain neutral material, no texture, no extra details, clean watertight solid.