START HERE - Acetaminophen (CAS 103-90-2) - READY TO PRINT - ANT HOUSE 2026-10-30 (procedure v7)
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A model of the acetaminophen molecule on a display base, printable in one go on a
standard FDM printer (0.4 mm nozzle, PLA). No 3D-printing experience needed.

THE SHORT WAY (3 steps)
  1. Open acetaminophen_103-90-2_ANT-HOUSE.3mf in PrusaSlicer (answer YES to "load configuration").
  2. Choose your printer, press A (Arrange), click Slice, check the preview (REMOVE_KEEP.png).
  3. Print at 100 % (do not scale). 3MF profile: about 9h 45m 23s, about 83 g PLA (ready G-code: 84 g).
  Details: PRINT_INSTRUCTIONS.txt.  Ready G-code for some printers: gcode/.

WHAT IS IN THIS FOLDER
  acetaminophen_103-90-2_ANT-HOUSE.3mf         model + our slicer settings (open this)
  acetaminophen_103-90-2_ANT-HOUSE.stl         model only (for any slicer)
                                               (= molgod-103-90-2-ready-to-print.stl from the website: same file, same SHA-256)
  gcode/                                       ready G-code for named printers + README
  PRINT_INSTRUCTIONS.txt                       step by step, settings, after printing
  PRINT_METHODOLOGY.txt                        why it is designed this way, checks, sources
  REMOVE_KEEP.png                              what to cut off and what to keep
  previews/                                    renders of the finished model + the same views
                                               "as-printed" (with slicer supports) and "after-removing-supports"
  slicer_profile.ini                           all settings (PrusaSlicer format)
  GATES_REPORT.txt                             results of our checks on this exact file
  QC_CHECKLIST.txt                             how to check the finished print
  FEEDBACK_FORM.html                           tell us how it printed
  PROVENANCE.txt                               where the atom positions come from + what we changed
  source/                                      the PubChem 3D source file (SDF)
  LICENSE.txt                                  licence and attribution
  SHA256SUMS.txt                               checksums of every file

THE MODEL
  Base: diameter 100 mm, 20 mm high, raised MolGod logo on top, name and CAS on
  the front, data and QR code (https://molgod.org/molecule/103-90-2/) underneath.
  Molecule: scale 1 A = 10.14 mm; 13 vertical hexagonal pencils with
  45-degree cups carry it - they are part of the model, keep them.
  Size 100 x 100 x 90 mm, 390946 triangles.

WHERE THE GEOMETRY COMES FROM
  Atom positions: PubChem CID 1983, conformer 000007BF00000001. COMPUTED by PubChem
  (PubChem3D, using OMEGA) - one calculated conformer, not an experimental
  structure. All 9 hydrogen atoms are shown. Molecule-geometry gate on this file: PASS.
  Details: PROVENANCE.txt.

VERIFY THE FILE
  SHA-256 of acetaminophen_103-90-2_ANT-HOUSE.stl: 4f3bff329c06744285c751551a3e7defc7c81c01b806ce2bf13bc26718b005f0
  Windows: certutil -hashfile acetaminophen_103-90-2_ANT-HOUSE.stl SHA256  |  macOS: shasum -a 256 ...  |  Linux: sha256sum ...

STATUS
  Checked by geometry tests and slicer simulation of this exact file
  (GATES_REPORT.txt). Not yet confirmed by a physical print of this release.
  Licence: CC BY-NC-SA 4.0 (LICENSE.txt). Model page: https://molgod.org/molecule/103-90-2/
