Impact Bit Bar with Magnet Click - Backstage cart lip (one piece, strongest)
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What it holds: 12 labelled insert bits + 6 nut setters / power bits. Each bit clicks onto a magnet and stays on a bumpy cart.

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_RI_impact_bit_bar_lip.stl  (supports: no (unless your slicer warns))
  - H_RI_impact_bit_bar_lip_base.stl  (supports: no (unless your slicer warns))
  - H_RI_impact_bit_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: the bar is exactly block height, so its top and bottom are level with the block (bottom on the deck). Optional M5 heat-set insert + thumbscrew lip clamp. Prints upright on its flat bottom, no supports. ~310 g. Two-colour labels: print <name>_base + <name>_text together as one object (same placement); one colour: the plain file.

HOW IT WORKS
  Every impact driver needs the right bit and nut setter, and loose bits roll away. This bar keeps the impact kit sorted and labelled at the drill station, so you can see at a glance which bit is out.
  Front tier: 12 x 25 mm insert bits, sizes on the front face in 5 mm letters: PH1, PH2, PH2, PH3, SQ1, SQ2, SQ2, SQ3, T15, T20, T25, T30.
  Rear tier: 6 deep sockets for 1/4 in hex-shank tools: nut setters 1/4, 5/16 and 3/8, 2 in power bits PH2 and SQ2, and a magnetic bit holder.
  The click: a 6 x 3 mm magnet sits under every socket (18 magnets: one drop of CA glue each, pressed in with a plastic or wooden stub, not a steel bit). A bit snaps home with a little click and stays put when the cart bumps over a cable ramp. Without magnets the 6.65 mm sockets still hold by a snug fit. Both tiers face you at 15 degrees, and every socket has a round lead-in, so a bit drops in without looking.
  Gaps in the rear row leave thumb room over the DOCK release pads, so you can still swap it one-handed.
  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 75 mm from the cart side (the rear tools stand up to about 50 mm above the bar)
  - Top sits 34 mm above the deck; lowest point 8 mm below it
  - Overall 67 x 168 x 42 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/#ri-impact-bit-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.
