Bag Handle Hook - Backstage cart lip (one piece, strongest)
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What it holds: Bags and 2 in webbing; 54 mm opening, flat floor; cart end

PRINT SETTINGS
  Filament:  PETG
  Walls:     5
  Infill:    35% gyroid
  Orientation: the files are already oriented for printing. Put them on the plate as they load;
               don't rotate them.

FILES AND SUPPORTS
  - clip_Q_hook_bag.stl  (supports: no)

HOW IT MOUNTS
  BACKSTAGE CART LIP (ONE PIECE, STRONGEST)
    The cart-lip slot is printed into the holder, so it is one piece and as strong as it gets.
    Hold it tilted, hook the slot over the upright lip on the edge of a Magliner / Backstage-style cart
    shelf, and rock it down until it sits flat against the side.

    Notes for this holder: One piece, strongest: native Magliner/Backstage 3.4 mm cart lip mount. optional M5 heat-set insert + nylon-tipped M5 thumbscrew. Prints on its end, no supports.

HOW IT WORKS
  A proper bag-handle hook: short, 35 mm wide so it doesn't twist, and a 54 mm clear opening with a flat 34 mm floor (10 mm inside corners), so 2 in (50.8 mm) webbing and padded handles lie flat instead of folding or riding up on the tip. Rated about 4 kg (a ditty bag, a small pouch, a jacket).
  It sticks out about 77 mm, so use it on the cart end: a bag hanging on the side also blocks the shelf below.
  Grab: lift the handle off the tip.
  On the cart

  - Sticks out 77 mm from the cart side
  - Hangs 56 mm below the deck
  - Needs 56 mm of flat cart side below the lip for the back plate to bear on (check with a straightedge; the plate must sit flush with the lip's outer face)
  Retention: held by gravity unless you fit the M5 thumbscrew. Melt a short M5 heat-set insert (6.4 mm hole, 9 mm deep) into the hole on the shelf-side face, then run a nylon-tipped M5 x 20 thumbscrew in until it nips the lip. That stops the part lifting off when something snags it, sliding along the lip, and rattling. Your cart's lip must be at least 16 mm tall for the screw to land on it. Without the screw, it lifts straight off (about 27 mm of lift) and can slide along the lip.
  Fits: Backstage Equipment and Magliner-style carts with a 3.4 mm upright steel shelf lip. 3.7 mm slot (0.3 mm clearance) with a round end, and 0.5 mm chamfers at both slot ends so elephant's foot can't pinch it.

OTHER MOUNTS
  The same holder also comes ToughBuilt bar (one piece), Dock (swap between mounts), Mountless (desk, shelf, case or screw to a panel). Pick the mount on the site: https://cart-tools.sdos-placeholder.workers.dev/#q-hook-bag

TEST THE FIT FIRST
  Carts, bars and tape rolls vary a little. Before a long print, print the small fit test from the
  Test pieces section of the site (or this part at low infill) and check it on your own gear.

Not affiliated with or endorsed by Magliner, Backstage Equipment, ToughBuilt, Milwaukee, Hollyland, Eartec, Sekonic, Inovativ, Matthews or Manfrotto. Brand names only say what a holder fits.
