Tape Measure + Utility Knife Belt Bar - Backstage cart lip (one piece, strongest)
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What it holds: Hang your tape and folding knife by their own belt clips. A ridge clicks them on, and the label shows when one is missing.

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
  - H_RK_tape_knife_bar_lip.stl  (supports: no (unless your slicer warns))
  - H_RK_tape_knife_bar_lip_base.stl  (supports: no (unless your slicer warns))
  - H_RK_tape_knife_bar_lip_text.stl  (supports: no (unless your slicer warns))

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 block: bar bottom level with the deck, so it stands up beside the deck and prints upright with no supports. Optional M5 lip clamps. ~211 g. Two-colour labels: print <name>_base + <name>_text together as one object (same placement); one colour: the plain file.

HOW IT WORKS
  Tape measures and folding knives are built to hang from a belt, so this bar gives them one.
  How it works: clip the tool on as you would on your belt. The case goes in front of the bar and the clip leaf goes behind it. As the clip slides down, its tip rides over a small ridge on the back of the bar and clicks. It stays on when the cart bounces and lifts off with one hand.

  - Tape bar: 4.5 mm thick, 38 mm tall, 52 mm clear between posts (fits most 16-35 ft tapes)
  - Knife bar: 3 mm thick, 32 mm tall, 28 mm clear (suits folding utility knives with a wire belt clip; fits Milwaukee Fastback)
  - TAPE / KNIFE labels: on the bar fronts, so you only see them when the tool is missing
  - Marker block: a Sharpie hole and a carpenter-pencil slot, 50 mm deep with drain holes
  Mounting (DOCK system): the back carries two DOCK tongues 60 mm apart. Drop it into two DOCK adapters (Magliner / Backstage lip, ToughBuilt bar, round or square tube, T-slot, all in the DOCK system listing) and it clicks in. To take it off, push the release pad with your thumb and lift. Riding a truck lift gate: fit both M5 lock screws (2 per twin holder). Print the DOCK coupon first.
  Cart facts (on two lip adapters)

  - Sticks out 45 mm from the cart side (plus the tools)
  - Top sits 34 mm above the deck; lowest point 28 mm below it
  - Overall 37 x 172 x 62 mm (out x along x up), tongues included

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/#rk-tape-knife-bar

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.
