rectangular box 3d model

Create a functional 3D-printable rectangular box with a separate sliding lid. Overall footprint: 90 × 60 mm. The box is hollow, open at the top, with uniform walls. One lower-left corner is diagonally chamfered: after the cut, the long straight edge must be 75 mm and the short straight edge 45 mm, connected by a diagonal edge. The chamfer extends through the full box height. Add internal grooves near the top for the lid. Create the lid as a separate thin flat part matching the box outline and the same chamfered corner. The lid slides horizontally INTO the grooves, not over the box. Add a small finger recess near one end. Use ~0.3 mm clearance per sliding side. Clean CAD geometry, watertight/manifold, no textures or decorations, optimized for FDM PLA printing with a 0.4 mm nozzle. Output box and lid as two separate printable objects.