THREADED JAR — print notes
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  Jar        ⌀55 inside / ⌀59.8 outside, 70 mm tall
  Lid        ⌀68.9 × 19 mm, knurled
  Thread     3-start, 6 mm pitch, 1.8 mm deep — opens in 0.7 turns

  PRINTING
    Both parts AS EXPORTED (jar on its floor, lid on its top),
    threads print as rounded 45-deg bumps — NO supports.
    0.2 mm layers, 3 walls. PETG for the kitchen and the shed.
    Lid runs tight? Regenerate with +0.1 mm clearance.
    The seal washer prints in TPU; drop it into the lid.

  Parts
    jar         63.4 ×   63.4 ×  70.0 mm   #5b8ba6
    lid         70.3 ×   70.3 ×  19.5 mm   #e0662b
    seal-tpu    59.0 ×   59.0 ×   1.0 mm   #1a1d21

  Notes
    ! The lid opens in 0.7 turn — that is the point of 3-start threads.
    ! Both parts print threads-up with NO supports: the crests are rounded 45° bumps. Jar stands on its floor, lid on its top.
    ! PETG for anything food-adjacent or damp; 0.2 mm layers, 3 walls. If the lid runs tight, bump the clearance by 0.1 mm.
    ! The seal is a flat TPU washer — print it in TPU and drop it into the lid; skip it for dry goods.

