HOSE ADAPTER — print & fit notes
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  End A      ⌀57 mm, into the port, 32 mm deep, 3 ribs
  End B      ⌀35 mm, over the port, 30 mm deep, 3 ribs
  Wall       2.4 mm · transition 15.48 mm
  Length     77.48 mm

  MEASURING — the part everyone gets wrong
    'into' end: you measured the port's INNER diameter. The
    adapter is a hair slimmer at the tip and jams tight.
    'over' end: you measured the port's OUTER diameter. The
    mouth is a hair wider and settles onto the ribs.

  PRINTING
    Stands on end A as exported. Straight adapters need no
    support; elbows past ~30° want tree supports on the outside.
    3+ perimeters, no infill (it is all wall). PETG grips hoses
    better than PLA and shrugs off a warm workshop.

  Parts
    adapter    57.5 ×   57.5 ×  77.5 mm     26.0 cm³

  Warnings
    ! Prints standing on end A, no supports for straight adapters. 3+ perimeters, no infill needed — it is all wall. PETG grips and flexes better than PLA on a warm workshop hose.

