A-Clamp and C-47 Combo Rail - Backstage cart lip (one piece, strongest)
======================================================================

What it holds: C-47s plus A-clamps, 22 mm jaw gap

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_BC_combo_rail.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 with the Magliner / cart lip mount (strongest). Prints standing on its end, no supports. Optional M5 heat-set insert + thumbscrew stops it lifting when you put gear back.

HOW IT WORKS
  Clamps and pins in one 150 mm rail, everything hanging. A-clamps go up over the 15 mm bar (one jaw in the 28 mm U) and hang handles-down; C-47s clip onto the outer 6 mm fin from below. The 22 mm gap between the bar and the fin takes a #2 clamp's outer jaw (with its tip cap) and a C-47's inner jaw. About 3 #2 A-clamps plus about 8 C-47s. Pull down to take one, one-handed. Top or middle shelf only.
  Nothing sticks up above the arm (12 mm above the deck) outboard of the mount, so there is nothing on top to catch a doorway or lift the part off.
  Fits: Backstage Equipment and Magliner-style carts with a 3.4 mm upright shelf lip. The 3.7 mm slot (0.3 mm clearance, 26.6 mm deep, round end, 0.5 mm chamfered ends) drops straight down onto the lip.
  Numbers to check against your cart

  - Sticks out from the cart side: 81 mm (part), about 90 mm with pins on; best on the cart end or a side that clears door frames
  - Hangs below the deck: 45 mm (part); clamp handles hang to roughly 200 mm below the deck
  - Flat cart side needed below the lip: 45 mm (the back plate bears there; check with a straightedge)
  Retention: held by gravity unless you fit the M5 thumbscrew. To lock it, melt an M5 short heat-set insert (6.4 mm hole, 9 mm deep) into the bore on the shelf-side face and turn a nylon-tipped M5 x 16-20 thumbscrew in until it clamps the lip. That stops lift-off from a snag, sliding along the lip and rattle. The screw sits 13 mm above the deck, so your lip must be at least 16 mm tall (measure once).
  Fit the thumbscrew on a rail you use all day. Taking a clamp or pin off pulls down and seats the rail, but putting one back pushes the rail UP, and it only has to rise 26.6 mm to come off the lip. The M5 thumbscrew stops that.

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/#bc-combo-rail

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.
