Print-In-Place Kickdown Door Holder
A gravity kickdown door holder that prints in one piece. It has a 40 x 58 mm plate with four 5 mm slots for #8 or #10 wood screws, a fixed 5 mm hinge pin and an 18 mm wide, 80 mm long arm with a serrated foot. Stowed, the arm points up and leans back against the door. Kick it down and it swings over the plate. Mount the plate's lower end about 15 mm above the floor and the arm wedges at roughly 24° to hold the door. The slots give 10 mm of height adjustment, and the holder works whatever the gap under the door is.
mechanism door-stop kickdown print-in-place