Cart Trash Bin (1.8 L, flip lid) - Backstage cart lip (one piece, strongest)
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What it holds: A 1.8 L clip-on trash bin for the side of a film cart: a push-flip lid that drops shut by itself, a bag-tuck ring that hides the liner, and a bucket that lifts out to empty.

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
  - TB_cart_bin_body.stl  (supports: no)
      how it lies on the plate: upright, open top up, no supports (finger pull underside is 45 deg); 5 walls (2.0 mm), 0.2 mm, brim recommended
  - TB_cart_bin_ring.stl  (supports: no)
      how it lies on the plate: upright (as used), no supports; both skirts start on the bed, the 2.7 mm channel roof bridges
  - TB_cart_bin_lid.stl  (supports: no)
      how it lies on the plate: top face DOWN on the plate (STL already flipped), no supports
  - TB_cart_bin_cradle_lip.stl  (supports: yes)
      how it lies on the plate: upright as used (floor on the bed); tree supports from the build plate ONLY under the 14 mm deck-side flange of the lip block (same as the library cup holders) AND under the flat bottom of the mount back plate (6.4 mm x mount length, ~42 mm below the deck line), support blocker in the slot; PETG 0.4, 0.2 mm, 4 walls, 15 % gyroid

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: Default: cradle printed in one piece with the Magliner/cart lip slot (shipped part), strongest. M5 heat-set insert + M5 x 12 thumbscrew lip clamp. Prints upright, tree supports only under the deck-side lip flange and the mount back plate bottom (~300 g). Bin: body (upright, 5 walls, brim), bag-tuck ring (upright), push-flip lid (prints top face down) + a 1.75 mm PETG filament pin as the hinge.

HOW IT WORKS
  A 1.8 L trash bin that rides on the side of the cart. Press the ribbed tab at the corner and the lid lifts. Toss the trash in and let go, and the lid drops shut by its own weight. A small click bead keeps it shut on bumpy floors, with no springs. The bucket's grip groove clicks into the cradle, so it stays put while you roll. To empty it, hook a finger under the pull on the front, lift the bucket out, pull the bag and drop it back in.
  Features

  - Tapered bucket with a flat back: grocery and bin bags slide in and out easily, and it sits close to the cart.
  - Bag-tuck ring snaps on with six bumps, clamps the liner over the rim and hides its edge. It holds tighter than the cradle click, so the bucket comes out with the ring and lid on it.
  - Front finger pull: lift the bucket one-handed.
  - Liner: fold the bag over the rim and trim or tuck the excess so less than 10 mm hangs below the rim. The ring covers that, and the 2 mm collar gap leaves room for the film.
  - Side-hinged lid on a 1.75 mm filament pin. It stops at about 75 deg and closes by gravity.
  - Three mounts: one-piece Magliner/Backstage shelf lip (M5 lip clamp), one-piece ToughBuilt bar hook (M5 thumbscrew), or the DOCK quick-swap tongue.
  Hardware: a 1.75 mm filament pin, 79 mm long (mushroom both ends with a soldering iron). Lip version: 1 x M5 heat-set insert + 1 x M5 x 12 knurled thumbscrew. ToughBuilt version: the same. DOCK: any DOCK adapter.
  Not test-printed yet. Not affiliated with Backstage Equipment, Magliner or ToughBuilt.

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/#tb-cart-bin-body

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.
