Cart Mosquito Repeller Cradle + Refill Box - Backstage cart lip (one piece, strongest)
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What it holds: Holds a Thermacell MR300 / MR450-class repeller upright with its hot top down at deck level, where nothing on the shelf can drape over it, plus a shaded box for 5 butane cartridges and the mats.

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_QJ_repeller_cradle_lip.stl  (supports: no (unless your slicer warns))
  - QJ_refill_lid.stl  (supports: no)
      how it lies on the plate: top face down, skirts up, no supports

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: Strongest: one piece with the Magliner / cart-lip block, the holder joined to it across its full width. Sits at the same height as the docked version. Fit the M5 heat-set insert(s) + thumbscrew. Prints upright, floor down; use build-plate-only supports under the 14 mm deck-side flange of the lip block only. Refill-box lid is the same as the other versions.

HOW IT WORKS
  Fits repellers about 198 x 74 x 46 mm (MR300 / MR450 class), with or without the belt clip: the unit's back rests on two rails and the clip drops between them. It stands upright in a 93 mm deep cradle with crush ribs. For rough moves, hook a silicone band or a 3-4 mm shock-cord loop over one post, across the unit's face above the switch, and over the other post. A front window lets you see the switch and grab the unit, and a push-up hole and drains are in the floor.
  The cradle hangs low on purpose: the heated top ends about level with the cart deck and sticks out past the deck edge, with nothing over it, so a jacket, bag or sound blanket laid on the shelf can't drape over the grille. The refill box sits low beside it, its lid more than 110 mm below the heater: 5 cartridge bores (27 mm) and a mat pocket under a snap-hinge shade lid with side louvres. Print the lid in a light colour and keep the cartridges out of direct sun.
  Safety: never cover the unit; remove the cartridge for transport in hot vehicles. Keep anything flammable away from the heated top.
  Check your unit: sizes are from retail listings (MR450: 7.75 x 2.9 x 1.8 in). Measure your repeller (74 x 46 footprint, plus the belt clip if fitted) and a cartridge (up to 27 x 80) first.
  Mount (DOCK, twin): this holder is wider than 120 mm, so it has two DOCK tongues 60 mm apart (SYSTEM_SPEC twin pattern). Use two adapters set 60 mm apart with the spacing gauge (DOCK_spacing_gauge_60): two cart-lip adapters A_MLN_lip (3.4 mm Magliner / Backstage shelf lip), ToughBuilt bar adapters or round-tube adapters. It drops in from above and both latches click. To lift it out, press the left latch pad, then the right, then lift. Print the DOCK coupon first to choose the fit. The M5 x 25 lock screw is required: fit it in the right-hand adapter only (the left boss stays empty so the neighbour clears).
  Cart facts (on two A_MLN_lip adapters, 60 mm apart)

  - Sticks out 83 mm from the cart side
  - Hangs 203 mm below the deck; holder top 34 mm above the deck; the repeller's heated top ends about level with the deck
  - Overall 74 x 198 x 237 mm
  Hardware: M5 lock screw (above); a silicone band or 3-4 mm shock-cord loop, about 150 mm around.

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/#qj-repeller-cradle

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.
