adjustable folding stand 3d model

Design a fully 3D-printable adjustable folding stand inspired by plant risers. Square top platform (500x50 0 mm) with open grid surface and rounded corners. Height adjustable from 150–300 mm using telescopic legs with multiple positions. Two U-shaped leg frames, one on each side. Each side controlled by a single simple snap-lock button (left lock controls left pair of legs, right lock controls right pair). Lock should be a large integrated spring snap button similar to trekking poles, easy to press by hand and automatically lock into holes. Legs fold inward under the platform for compact flat storage (<50 mm folded thickness). All parts must be 3D printable in PETG or ASA without metal hardware. Reinforced frame and ribs to support 15–20 kg. Modern industrial product design, matte black finish, realistic engineering details, manufacturable CAD concept, exploded view, folded view, extended view, and close-up of locking mechanism.