Side Bin 120 mm Deep - Backstage cart lip (one piece, strongest)
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What it holds: Box 75 x 110 inside, 112-120 deep; needs 50 mm flat side; top/middle shelf

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_H_box_120deep.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 with the Magliner/cart lip mount, strongest. Prints on its end, no supports. Optional M5 heat-set insert + M5 x 20 nylon-tip thumbscrew (two on this size) stops lift-off.

HOW IT WORKS
  A deep dump bin that drops onto the shelf lip of a film cart. It holds #1 and #2 A-clamps, gloves and part rolls of tape. It carries the most weight above the shelf edge, so it gets a 10 mm back plate that runs 50 mm down the cart side and two M5 thumbscrew bores. There are three 6 mm drains at the low outboard floor edge, and the outboard corners are rounded r8.
  Inside: 75 wide x 110 long x 112-120 deep, 120 mm along the cart. Fit both thumbscrews if the cart moves loaded. It stands 128 mm above the deck, so mount it on the top or middle shelf, where it won't block the shelf above.
  H needs 50 mm of flat cart side below the lip: check that with a straightedge, because the test slice only proves 40 mm.
  Numbers

  - Sticks out from the cart side: 86 mm
  - Hangs below the deck: 50 mm
  - Top above the deck: 128 mm
  - Flat cart side needed below the lip: 50 mm deep, flush with the lip's outer face
  Held by gravity unless you fit the M5 thumbscrew. The part drops over the lip and stays on by its own weight. For a moving cart, press an M5 short heat-set insert into the hole in the deck-side face and fit an M5 x 20 nylon-tipped thumbscrew. The screw clamps the cart lip against the outer wall, which stops lift-off, sliding along the lip and rattle. The screw sits 13 mm above the deck, so it only works if your cart's lip is at least 16 mm tall. Measure it first.
  Fits: Backstage Equipment and Magliner-style carts with a 3.4 mm upright steel shelf lip. The slot is 3.7 mm wide (0.3 mm clearance) with a round end and 0.5 mm chamfers at both slot ends.

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/#h-box-120deep

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.
