Meter Kit Cup (4 x AA + lens cap) - Backstage cart lip (one piece, strongest)
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What it holds: 4 x AA (one change for each meter, 12.5 mm proud to pinch) + 46 mm cone cup (L-858D lens cap or 30.5-40.5 step-up ring)

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_PD_meter_kit_cup.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 upside down, rim on the bed, no supports.

HOW IT WORKS
  Four AA cells stand upright, one change for each meter, with 12.5 mm standing proud so you can pinch one out. A 46 mm cone cup takes the L-858D spot-lens cap or a 30.5-40.5 step-up ring and centres it. Every hole drains. The cup sits entirely within the 42 mm clip height, so nothing hangs below the deck.
  On the cart: sticks out 61.3 mm from the cart side and is 90.6 mm long.
  Retention on the cart: held by gravity unless you fit the M5 thumbscrew. Press a short M5 heat-set insert (6.4 mm bore) into the hole on the deck-side face of the clip, then fit a nylon-tipped M5 thumbscrew. It clamps the cart lip so the holster cannot lift off on a snag, slide along the lip or rattle. The screw sits 13 mm above the deck, so your cart's lip needs to be at least 16 mm tall.
  Fits: Backstage Equipment and Magliner-style carts with a 3.4 mm shelf lip. It drops on from above: a 3.7 mm slot (0.3 mm clearance), 26.6 mm deep with a rounded end and chamfered 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/#pd-meter-kit-cup

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.
