Sunglasses + Clear Glasses, Felt-Lined, Bump-Proof Lips - Backstage cart lip (one piece, strongest)
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What it holds: Two pockets, stadium-style: sunglasses behind and higher, clear or safety glasses in front. Lenses rest on felt, and lips over the pockets keep them in over curbs and cable ramps.

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_QD_glasses_rest_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: Strongest: one piece with the Magliner / cart-lip block, the holder fused to an 8 mm back plate that bears on the cart side down to the holder bottom. Sits at the same height as the swappable version on the Magliner adapter, 7 mm closer to the cart. Fit 2 M5 heat-set inserts + M5 thumbscrews. Prints upright, floor down like the swappable version; use build-plate-only supports under the 14 mm deck-side flange of the lip block only.

HOW IT WORKS
  Glasses come off and go on all day as the light changes, and get scratched in a bin or sat on. This rest gives two pairs a home you can read at a glance.
  Stadium pockets: the rear pocket (54 x 158 mm, raised 8 mm) takes folded sunglasses, wraparounds included. The front pocket (48 x 158 mm) takes folded clear, safety or reading glasses, including safety glasses with tall lenses. Lay them in folded, lenses down on the felt. The rear pair sits higher, so you grab the right one first time.
  Bump-proof: the pockets are 34-36 mm deep, and a 3.5 mm lip runs along the top of the front wall and the divider. Tip the front edge of the frame under the lip, then lay it down. A frame taller than the lip opening (44.5 mm front, 50.5 mm rear) is hooked under it and can't bounce out. Smaller frames sit deep below the rim. For rough ground, thread a 3 mm shock cord through the holes in the side walls, across each pocket.
  Lined: every surface a lens can touch (both floors, the back wall, both faces of the divider and the front wall) has a 1 mm recess for self-adhesive felt, so the felt sits flush and its edges can't peel. The floors fall 1.5 degrees to drain holes in every corner, so rain runs off. Use closed-cell felt or thin EVA foam so the lining doesn't stay wet.
  Mount: a DOCK tongue on the back (a 38 mm, 45 degree dovetail with a click latch). It drops into any DOCK carrier adapter in this collection: the Magliner/Backstage 3.4 mm shelf-lip adapter (A_MLN_lip), the ToughBuilt bar adapters (A_TBB_bar) or the 19-32 mm tube adapter (A_TUBE). Push the latch pad and lift to swap holders one-handed. Nothing on the holder rises over the latch pad or the lock screw. The adapters are a separate download.
  Cart facts (on the Magliner lip adapter)

  - Sticks out 129 mm from the cart side
  - Hangs 30 mm below the deck; the holder top is 34 mm above it
  - Part size 120.0 x 164.0 x 64.0 mm (out x along x up)
  - Light holder (two pairs weigh under 100 g), so one tongue is enough for its 164 mm width
  - Open pointed-arch channels under the raised rear floor save filament

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/#qd-glasses-rest

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.
