QC CHECKLIST - Lactic Acid (CAS 50-21-5) - ANT HOUSE 2026-10-29 (procedure v7)
File SHA-256: 4ed73c7c99b958a71d93bf9d9c370ee7507cd1a346e2789745d6978df8dd1676
Mark each item PASS or FAIL. The print is accepted only if all items 1-13 PASS.

STRUCTURE
 [ ] 1  All 7 pencils (with their cups) intact and attached at both ends (base and atom)
 [ ] 2  Single and double bonds intact (no cracks, no broken cylinders); no detached spheres
 [ ] 3  Smallest spheres (e.g. hydrogen) and small details intact; no damage from support removal;
        no support residue on spheres, bonds or engravings

LEGIBILITY (normal indoor light, normal or corrected vision)
 [ ] 4  Name and CAS on the front readable from 40 cm
 [ ] 5  Formula on the top arc readable from 25 cm
 [ ] 6  Texts on the underside (name, CAS, formula, MW) readable from 25 cm
 [ ] 7  Raised MolGod logo on top: symbol sharp, "MolGod.org" readable from 40 cm;
        marks left by removed supports on the logo are small (cosmetic)
 [ ] 8  No support residue on the engraved letters of the spheres
 [ ] 9  Element letters on the atom spheres readable
 [ ] 10 QR code (underside) scans on 2 different phones at 15-30 cm
        and opens https://molgod.org/molecule/50-21-5/

STABILITY AND DIMENSIONS
 [ ] 11 The model stands on a flat table without rocking
 [ ] 12 Base diameter 130 +/- 0.5 mm         measured: ______ mm
 [ ] 13 Total height 96.1 +/- 1 mm      measured: ______ mm
        (base with logo: 21.4 mm)

RECORDS (for information, not PASS/FAIL)
    14 Mass after support removal: ______ g   (slicer estimate 125-130 g incl. supports)
    15 Actual print time: ____ h ____ min      (slicer estimate 13h 0m 36s for the 3MF profile; per printer: gcode/README_GCODE.txt)
    16 Photos: front, side, top, bottom + a close-up of each pencil

RESULT:  PASS / FAIL     Inspector: __________  Date: __________
