modular cube frame 3d model

Import your reference sketch or measurements You can drag in your notebook photo or enter the dimensions manually: Width: 216 mm Length: 251 mm Height: 21 mm Create the base block Use the “Box” primitive. Set the outer dimensions above. Hollow the box Add a second box inside and subtract it (use “Boolean Difference”). Inner dimensions: 210 × 245 × 18 mm. Add rod holes Insert cylinders (diameter ≈ 4.5 mm). Space them 15 mm apart along the 21 cm direction. Align them so rods sit flush with the top edge. Add corner bumps for stacking Place small rounded cubes (10 × 10 × 3 mm) on each top corner. Duplicate and invert them underneath for recesses. Smooth edges Use “Fillet” or “Chamfer” to soften corners for printing.