Print-In-Place Folding Shelf Bracket
A three-piece print-in-place folding shelf bracket: a 58 x 30 x 10 mm wall plate, a 106 mm fold-down arm on a 5 mm print-in-place hinge pin, and a captive diagonal strut whose 10 mm round nose drops into a U-trough on the wall plate to lock the arm at 90°. Wall plate takes four 4.5 mm screws (#8 wood screw / M4) on a 38 x 18 mm pattern; the arm has four more 4.5 mm holes to screw a shelf board on from below. Prints flat at 176 x 30 x 19 mm, no supports, and folds against the wall when not in use — for light-duty fold-away shelves, drying racks and van/shop flip-up surfaces.
mechanism hinge shelf-bracket print-in-place