Steel Face for Magnet Work Lights + Keyhole Stud - Backstage cart lip (one piece, strongest)
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What it holds: Gives a magnet-back work light (e.g. M12 Rover size) a home on an aluminium cart: tilted steel face, ledge, keyhole stud, tether hole.

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_RH_light_perch_lip.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 (strongest). The perch sits 7.5 mm closer to the cart and 8 mm higher than on the DOCK adapter; back plate bears on the cart side. Optional M5 heat-set insert + M5 thumbscrew clamps the lip. Prints upright like the DOCK version; turn on support ON THE BUILD PLATE ONLY: it only lands under the lip block's inner flange (the rest needs none). ~245 g.

HOW IT WORKS
  Magnet work lights have nothing to grip on an aluminium cart. This perch holds a 60 x 80 mm steel plate (a mending plate, or 3 fender washers) 0.3 mm proud of a face tilted back 15 deg. The light leans in and stands on a 22 mm ledge.
  One M5 heat-set insert at the plate centre takes a countersunk screw that holds the plate flush. With no plate, a pan-head screw left 3 mm proud is a keyhole stud for keyhole-back lights. Tether required on a moving cart: the ledge is 22 mm deep and the light about 40 mm, so a kerb or someone brushing past can knock it off the magnet. Tie the light's lanyard through the 5 mm tether hole.
  Sized for a 91 x 64 x 135 mm flood light with a rear magnet and keyhole.
  Mounting (DOCK system): the back carries one DOCK tongue. Drop it into DOCK carrier 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. Fit the adapter's M5 lock thumbscrew: this holds a heavy tool well out from the cart.

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/#rh-light-perch

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.
