1/4-20 Screw Cup - Mountless (desk, shelf, case or screw to a panel)
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What it holds: The front wall curves into the floor, so you sweep a bolt up and out with one fingertip.

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
  - insert_IA_screw_cup_quarter20.stl  (supports: no)
      how it lies on the plate: upright on its feet (STL already oriented), no supports; filament change at the tab-top layer z = 24.2 for white letters
  - insert_IB_screw_cup_three8_16.stl  (supports: no (unless your slicer warns))
  - insert_IC_spuds_shims.stl  (supports: no (unless your slicer warns))
  - insert_ID_hex_bits.stl  (supports: no (unless your slicer warns))
  - insert_IE_batteries_fresh.stl  (supports: no (unless your slicer warns))
  - insert_IF_batteries_dead.stl  (supports: no (unless your slicer warns))
  - insert_IG_c47_lanes.stl  (supports: no (unless your slicer warns))
  - insert_IH_zip_tie_tray.stl  (supports: no (unless your slicer warns))
  - insert_II_earplug_dispenser.stl  (supports: no (unless your slicer warns))
  - insert_IJ_gel_cut_sleeve.stl  (supports: no (unless your slicer warns))
  - insert_IK_lens_tissue_slot.stl  (supports: no (unless your slicer warns))
  - insert_IL_sharpie_tray.stl  (supports: no (unless your slicer warns))
  - insert_IM_lip_balm_spf.stl  (supports: no (unless your slicer warns))
  - insert_IN_roll_cup.stl  (supports: no (unless your slicer warns))
  - insert_IO_small_tools.stl  (supports: no (unless your slicer warns))
  - insert_IP_grip_hardware_quad.stl  (supports: no (unless your slicer warns))

HOW IT MOUNTS
  MOUNTLESS (DESK, SHELF, CASE OR SCREW TO A PANEL)
    No mount at all: the holder alone, with a flat base so it stands on a desk or shelf, or sits in a
    drawer or case. Where the back has two small countersunk holes, two countersunk #8 / M4 screws fix
    it to a wall, bench or panel (the notes below say whether this holder has them).

    Notes for this holder: Gridfinity drop-in inserts: no mount, they stand on their feet on a desk or in a drawer and drop into any clear-lid case, the tilt-out drawer or any Gridfinity baseplate. Print the ones you need, upright, no supports.

HOW IT WORKS
  The front wall curves into the floor, so you sweep a bolt up and out with one fingertip. The size is on the tab, and it is also stamped into the floor, so it shows when the cup runs low.
  Holds
  1/4-20 bolts, nuts and washers loose in one scoop cup (a handful: about 12 x 1/2 in bolts, measured by volume).
  Numbers

  - Grid: 1x1 Gridfinity units, 3u (rim 24.8 mm, no stacking lip)
  - Outside: 41.5 x 41.5 x 24.8 mm
  - White letters: filament change at z 24.2 mm
  Grid: the bins are Gridfinity-compatible (Gridfinity by Zack Freedman, MIT licence). The 42 mm grid, the 7 mm height unit and the standard base foot were modelled from the published spec. They drop into any Gridfinity baseplate, and into the clear-lid DOCK cases in this collection. They have no stacking lip. Instead the rim sits at 7u + 3.8 mm, which is no taller than a standard bin with its lip, so they fit any case that takes standard bins.
  Printing
  It fits the clear-lid DOCK cases in this collection, which hang on Magliner / Backstage cart lips, ToughBuilt bars and tubes. Not affiliated with Magliner, Backstage Equipment, Sharpie or ToughBuilt.

OTHER MOUNTS
  More holders and the latest versions: https://cart-tools.sdos-placeholder.workers.dev/#insert-ia-screw-cup-quarter20

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.
