Issues that can be improved regarding the current design
§ To achieve a better fitting between the different pieces when assembling the bench, you can make the assembling openings wider, 1 or 2 millimeters should be enough.
§ Is difficult to assemble the comb shape pieces that fit in inside the opening made in the rib
§ The assembling openings were made perpendicular to the outline of the bench, this forces you to assemble all the ribs that you want to use for assembling at the same time and to disassemble the bench if you want to change one. On the other hand, this prevents the piece from accidentally disassembling when lifted.
§ The design will be more versatile regarding different assembly options if comb shape pieces with other sizes were added to the design
§ The circles arranged in the corners of the assembling openings in order to avoid getting a curved corner during the drilling plot have to be set according to the bit selected for the CNC machine to drill.