PCTG pass: cross-check Chapter 8 against maker interview and MyTechFun tests - §8.6 fiber grades re-based as brand-dependent: 3D-Fuel's 10% CF/GF measured tougher than unfilled on Izod/Charpy with layer adhesion at least as good; GF below unfilled on XY tensile (impact-modified compound); low-load fiber heat gain ~tens of °C vs the 2-3 °C TDS delta (§22.4 method lesson); matte black ~4% CF with hardened nozzle required per vendor page - Staleness: Table 24.1/8.6 bed default now textured PEI (bare G10 for gloss undersides); 3D-Fuel nozzle window 250-280 (255-270 recommended, >=245 floor) verified against live vendor pages; drying 60-70 °C 4-8 h aligned across Tables 3.1/8.6/A.3; speed row reframed as flow-limited (vendor CoreXY profiles to 250 mm/s) - Honesty: §8 intro records the vendor's 20-30x -> 8-12x test-bar correction with printed parts staying 2-3x; Table 8.3 heat margins framed as ceilings (independent test at the low end of the vendor's 5-15 °C band); §8.11 layer adhesion placed in the average-PETG band and the 20,000-h weathering claim noted as vendor-tier; §8.9 gains compressive/gasket fit, the five-day creep result, and a no-pressure-advance disqualifier - Enrichments: §8.8 minimum-layer-time bullet; Table 8.5 color program and Essentium 2017 debut; §7.7 HF-grade qualification clause; §30.1 microwave pre-dry note (GF reported practice, CF never) - Provenance: four D.6 ledger rows (3D-Fuel guidance pages + CEO interview, two MyTechFun videos cited qualitatively per D.1); Source-Manifest rows 8.3/8.5/8.6; D.5 pass record - .gitignore: per-iteration review reports excluded by name (standing rule) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

hyiger committed Jul 12, 2026

Accuracy pass 5: fix 10 consolidation-drift findings Implements the 2026-07-11 documentation-accuracy follow-up report: 10 findings, mostly appendix/workflow roll-up tables that had not inherited the pass-4 chapter corrections. This message is the finding-level record of the pass. `make check` passes: source hygiene, cross-references and manifest coverage, brand index (44 rows). Fixes (report numbering): 1. A.3 PCL nozzle 85-95 -> 100-140 C by grade (3D-pen grades 80-100), per Ch 21. Deviation: bed kept at 20-30 C rather than the report's 20-45 - the wider figure traces only to a Polyfluor datasheet, a vendor the volume does not survey, and A.3 synthesizes the chapter ("bed unheated or barely warm") 2. A.3 PVDF nozzle 230-250 -> 235-265 C (FluorX 245-265), per Ch 17; bed 90-110 C was already present; FluorX product page ledgered in D.6 3. PC-CF/GF envelopes now include Ultrafuse PC GF30: Table 15.5 nozzle -> 275-330 C; Table 15.6 -> 275-300 (GF30: 280-330); A.3 -> 275-330 (GF30: 280-330). Dependent fix the report missed: Table 15.2's GF30 note said the vendor window "exceeds the Table 15.6 family range" and would have gone stale - it now reads "sets the top of the Table 15.6 family range" 4. A.3 PE/HDPE row filled from Spectrum's product page (verified live before adoption): bed 80-100 C, enclosure recommended for larger prints, no drying requirement, Tier 2; the same guidance added to Ch 12 §12.1 so the appendix keeps chapter-synthesis provenance; Spectrum HDPE page ledgered in D.6 5. Table 14.2 PPA wet-stiffness cell -> "grade-dependent (Bambu PPA-CF ~2-3%)" so the table reads correctly standalone (the caption already scoped the figure to Bambu PPA-CF) 6. A.2 unfilled-PP mechanicals aligned with Ch 11's widened envelope: tensile 10-25 MPa, modulus 0.25-1.4 GPa, elongation 100-800+% 7. Table 24.1 PEBA bed 50-60 -> 50-90 C with a "Flexfill PEBA 90A specifies 70-90" note; now consistent with Table 16.4 and A.3 8. Convection-oven drying row: PA6 removed from the 100-140 C bucket; PA6/PA66 pointed back to the 80-90 C dryer class (spools deform above 90 C, per Part I §3.5) 9. A.3 PHA bed "0-60" -> "20 (cold-bed)-60", matching Table 24.1's cold-bed convention 10. check-source-hygiene.sh now skips all report artifacts (FDM-Wiki-Review-Report.md, Accuracy-Audit-*.md, Documentation-Accuracy-Fix-Report.md); README layout note updated to match Plumbing: - D.6: 3DXTech FluorX PVDF and Spectrum HDPE product-page rows added - Source-Manifest: 15.2 and 15.6 Checked -> July 2026 - Appendix C: Fillamentum row gains Ch 24 (the new Flexfill mention in Table 24.1, caught by scan-brand-mentions --verify) - Appendix D.5 verification history -> five passes / 183 findings Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

hyiger committed Jul 11, 2026

Accuracy pass 4: fix 81 audit findings; retire the Changelog page Implements the independent 2026-07-10 full-content audit of every content page: 81 findings, 0 Critical / 5 High / 26 Medium / 50 Low, applied in the report's remediation order. The Changelog page is retired (below), so this message is the finding-level record of the pass. `make check` passes: source hygiene; cross-references and manifest coverage (228 sections, 71 tables); brand index (44 rows). High findings: - H-1 III §7.4 Tough PETG recast around doubled notched impact (PolyMax printed Charpy 11.6 kJ/m2 XY); resin-basis "elongation 100%+" removed - H-2 V §11.5 FormFutura Centaur PP nozzle 200-240 -> 245-270 C per vendor guidance; Table 11.3 envelope widened with L-19 - H-3 VI §14.6 Unsourced "Bambu PPA-GF companion (late 2025/26)" claim deleted - no product page, announcement, or reseller listing exists (report offered delete-or-replace; delete chosen) - H-4 VIII §16.9-16.10 colorFabb varioShore TPU added as the reference consumer foaming TPU (sold since 2020); "single-supplier market" claim rewritten as two-supplier; activation now vendor-specific (Siraya ~225-240 C, varioShore ~200-250 C); varioShore ledgered in D.6 - H-5 VIII + A.1 PEBA continuous service 100-120 -> 70-90 C with the stiffest grades ~100 C short-term, in chapter prose, Table 16.3, and Appendix A.1 together; TPEE now clearly ranks above PEBA per §16.11 Medium findings: - M-1 I §1.2 material jetting is not powder-bed: "(SLS, MJF), material jetting (MJ)" - M-2 III §8.1 Spectrum and Fiberlogy dropped from the Tritan-class list (their published HDT matches generic CHDM-rich PCTG) - M-3 V §11.5 UltiMaker PP 220-240/80-100 -> 205-220/85-100 C; the unverifiable "fan 50%" figure dropped (verify-or-drop) - M-4 V T11.4 food-contact note scoped to Centaur (natural) and Fillamentum; explicitly not UltiMaker (TDS: non-suitable) - M-5 V §11.5 Prusament PP family de-inverted: PP-GF is the stronger, lower-cost-per-kg choice; PP-CF holds the higher HDT - M-6 V §12.1 HDPE split per product: Braskem FL300PE density ~0.95, 210-230 C; Spectrum (filled Low-Warp) density 1.1, 260-290 C - M-7 V T11.2 unfilled-PP envelope widened to cover the surveyed soft copolymers (tensile 10-25 MPa, modulus 0.25-1.4 GPa, HDT 51-100 C, Shore D 42-72, elongation 100-800+) - M-8 V §11.8 PP sanding: PLA/PETG gumming equivalence dropped; low-RPM advice kept, wet sanding reframed as dust control - M-9 VI T14.1 PA9T saturation ~2.5-3.2 -> ~1.2-2% (Kuraray positions PA9T as the low-absorption member; family ordering preserved) - M-10 VI §14.6 dry/wet comparison re-attributed to the Bambu product page; TDS V1.0 cited for dry values only; caption "100% infill" - M-11 VI T13.1 CoPA saturation ~5-8 -> ~8-10% (parent-level amide density, lower crystallinity; Ultramid C33 L 10.5%) - M-12 VII + A.1 GP PC blends HDT @ 0.45 MPa 95-145 -> 105-120 C (the 145 endpoint was Tg leaking into the HDT column) - M-13 VII/VIII/App C/D.1 "Forward AM (BASF)" -> Forward AM Technologies (ex-BASF; acquired by Stratasys, 2025) - M-14 IX §17.3 PVDF processing -> ~235-265 C (FluorX 245-265, ceiling 290); margin-to-degradation arithmetic restated - M-15 X §18.1 PPS chemical resistance restricted to solvents; oxidizing acids (nitric, peroxy; extended HCl service) attack PPS - M-16 X §18.1 PPS tensile -> ~60-110 MPa printed XY (10%-CF grades print in the 60s) - M-17 X §18.2 autoclave claim qualified: PPSU's differentiator is cycle life under load + validated record; PP serves low-stress 121 C cycles - M-18 X §19.1 PEEK annealing 140-200 -> ~160-200 C (typical 200 C hold); crystallization cannot proceed at or below Tg 143 C - M-19 X §19.4 PEKK service split: crystallized 220-240 C; as-printed amorphous PEKK-A is Tg-limited to ~140-150 C - M-20 XI §21.2 PCL -> ~100-140 C by grade (Facilan PCL 100 ~120 C); pen grades 80-100 C - M-21 XI §21.3 Polymaker PolySmooth/PolyCast added as the original, globally distributed PVB smoothing ecosystem (Polysher) - M-22 XII §25.1 IDEX corrected: two parts at once (duplication/mirror) or one part with two materials via alternating heads; carriages share a gantry - M-23 XII §23.4 EM verification tolerance +-0.5% -> +-2% (coherent with hand-caliper resolution; report offered +-2% or a micrometer) - M-24 A.1 filled-PP continuous service 100 -> "~80-90, grade-dependent" with new note (g) citing Tables 11.2/11.4 - M-25 D.1/D.3 basf-forward-am.com -> forward-am.com (both occurrences) - M-26 D.4 UL 2904 cited at 2nd edition (2023); 1st edition (2019) noted as superseded Low findings: - L-1 I §2.2 PPA diacid: terephthalic and/or isophthalic (phthalic-acid isomers), not phthalic acid proper - L-2 I T3.1 fiber loading raises moisture pickup rate, not capacity - L-3 I §1.3 tier-2 makers: Celanese (ex-DuPont), Syensqo (ex-Solvay) - L-4 I §3.6 + XII T26.2 PLA anneal HDT split by grade: nucleated/HTPLA ~110-120 C; commodity ~85-110 C; high-D grades respond little - L-5 I §5.1 UL 2904 rebucketed: government guidance and consensus standards - L-6 I §2.1 terephthalic-acid "TPA" spelled out at point of use (ISO 18064 TPA collision stays flagged in the glossary) - L-7 III T7.2 HDglass positioned as separate from FormFutura's X-line - L-8 III §7.4 AthenaX "alongside" ApolloX/TitanX, not "a step above" - L-9 III §8.1/T8.1 both diol homopolymers are crystalline (PCT Tm ~285 C); only the mixed-diol mid-range is amorphous - L-10 III §9.1 crystalline-PET example narrowed to CPET oven trays - L-11 III + VII "Schlieren texture" -> spherulitic haze - L-12 V T11.1 FL900PP-CF moved to the PP-CF row; recycled content is the carbon fiber, not the PP matrix - L-13 V §11.1 FL900PP -> FL900PP-CF; "all explicitly built on PP copolymer matrices" softened - L-14 IV ASA typical window widened to ~240-270 C / 75-110 C bed (PolyLite ASA included); Table 10.1 range note aligned - L-15 V §11.5 Recreus primer documented for glass (not PEI); reversed PPprint lineage claim dropped; PP3D treated as current - L-16 V T11.4 "lowest-density fiber-reinforced structural filament" - L-17 V §11.4 adhesion solutions "mostly" PP-on-PP; Magigoo PP is the exception (§11.7) - L-18 V intro "hardest widely available commodity filament to print" - L-19 V T11.3 unfilled-PP envelope 200-270 C nozzle / 20-105 C bed - L-20 VI §13.5 intro nozzle envelope 240-300 C (matches the PA66 row) - L-21 VI T14.5 3DXTech HTN+CF flex modulus -> ~9.5 GPa (TDS Rev 1.0, Aug 2025) - L-22 VI T14.5 Flashforge PPA-CF filled in: tensile 108-112 MPa, flex 6.5-7 GPa - L-23 VI §14.7 brand-variation claim softened; Flashforge/LUVOCOM 255-275 C low-temperature outlier flagged - L-24 VI T14.2 PPA filament Tg -> ~80-125, grade-dependent (footnote aligned) - L-25 VI §14.6 PAHT-CF "roughly a third" the cost of true PPA-CF - L-26 VII T15.1 PC-PBT tensile 42 -> 50.4 MPa (TDS V5.4); PolyMax PC HDT filled: 114 C (99 C @ 1.8 MPa) - L-27 VII T15.1 caption: only Prusament publishes yield-basis values - L-28 VII T15.5 ESD-PC tensile -> ~68-75 MPa (printed) - L-29 VII §15.1 Trinseo Calibre qualified as legacy (exited virgin PC production Jan 2025; recycled focus) - L-30 VIII + A.3 PEBA bed 50-60 -> 50-90 C (Flexfill PEBA 90A: 70-90) - L-31 VIII §16.10 PEBA entry points extended: eSun and SainSmart (90A), Siraya non-foaming 85A/95A - L-32 IX intro PVDF HF thresholds aligned: onset ~350 C, conservative SDS value ~315 C - L-33 IX §17.2 Delrin "(originally DuPont, divested 2023)" - L-34 X intro 110-150 C bed floor scoped to sulfones/PEI; PPS-CF beds run 80-120 C per §18.1 - L-35 X §19.2 PEKK-A stated as pseudo-amorphous on the 60/40 T/I basis; Tm ~305 C, crystallizable by annealing - L-36 X footnote corrected to CarbonX PEEK+CF / PEKK-A+CF (ThermaX is the unfilled line) - L-37 X T19.1 3DXTech PAEK pricing: $600-800/kg specialty tier; generic import PEEK $200-400/kg - L-38 XI §21.3 IPA-vs-acetone contrast reworded around handling and flammability, not regulatory status - L-39 XI §21.3 unfounded swellability -> weak-interlayer causal clause dropped; the adhesion observation kept - L-40 XI §21.1 allPHA high fan "to quench each layer" (crystallization), not for layer adhesion - L-41 XII §23.6 amorphous shrinkage 0.3-0.5 -> 0.2-0.5% - L-42 XII T24.2 3DLAC 3DNYLON is a nylon-specific brush-applicator liquid, not a spray - L-43 XII T25.1 PPS-CF chamber tier caveated "(product-dependent - see Table 24.1)" - L-44 XII §23.2 temperature-tower bands ~10 mm (was 30 mm) - L-45 XII T24.1 PHA bed "20 (cold-bed)-60" per the table's convention - L-46 A.2 PP notched-impact cells footnoted as Charpy-basis (note f) - L-47 A.3 PPA (unfilled) bed floor 80 -> 70 C (Siraya prints 70-80) - L-48 B.2 Spectrum PCTG CF 245 C bench value retained as measured; deviation below the vendor 250-270 C window annotated in the caption - L-49 A.3 PE/HDPE row added: 210-230 C (Braskem); 260-290 C (Spectrum Low-Warp); undocumented cells deliberately left "-" - L-50 A.2 PP-CF modulus "2.0-4.0 (to ~6.5, FL900PP-CF)" Beyond the audit's finding list: - Table 26.2's PEEK annealing row carried the same sub-Tg floor as M-18; synced to the corrected §19.1 (160-200 C, typical 200) - Appendix C: Forward AM row keeps the scanner-canonical short name with an ownership parenthetical (norm_name strips trailing parentheticals); Polymaker row gains Ch 21 (PolySmooth/PolyCast) - Table D.1 caption dates the forward-am.com correction to July 2026 - Appendix D.5 verification history: four passes / 173 findings Ledger and manifest: - D.6: Bambu PPA-CF row split (TDS V1.0 = dry values; product page = wet/comparison); ISO 18064 row upgraded to clause-verified (2022 ed., §6.4) - the TPS-H/TPS-N hedge from the external review is now confirmed against the standard's own text; colorFabb varioShore product-page row added - Source-Manifest: 14.6 -> versioned + ledgered; 16.1 -> versioned (caveat dropped); 16.5 notes the varioShore ledger row; Checked -> July 2026 for the tables edited in this pass Retire the Changelog page: - Changelog.md deleted; links removed from Home, _Sidebar, the contents page, README, Source-Manifest (maintenance duty and caption), and Appendix D.5 - Review passes are recorded in commit messages from here on; D.5 keeps the volume's compact verification history Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

hyiger committed Jul 11, 2026

Implement the repository review: auditability, policy-as-code, validation entry point - P1: Source-Manifest page maps all 71 tables to source basis, provenance class (versioned/ledgered/domain+window/bench/synthesis/standards), volatility, and check date; D.2 and D.6 cross-link to it; coverage is enforced by check-cross-references.py - P2: brand-index counting policy encoded in scan-brand-mentions.py (chapters 6-32 + Appendix B, commented non-filament carve-outs, NO_ROW list); --verify fails on drift from the checked-in Appendix C table - P2: check-cross-references.py validates same-page (#anchor) links and models GitHub duplicate-slug suffixing; review-report file skipped by name in all checks - P3: Changelog gains per-pass commit linkage and finding-level detail tables for the external content review and this repository review; OSHA 29 CFR 1910.1052 and IARC Vol 110 (DCM Group 2A) verified against live sources and ledgered in D.6 - P3: README maintenance page, Makefile (make check), optional pre-push hook (make install-hooks), .gitignore Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

hyiger committed Jul 9, 2026