The marks, measured and in use.

Rule weight scales with wordmark size. The horizontal rule that divides wordmark from foundry caption is not a fixed value — it tracks the wordmark's type size so the visual weight stays proportional. The hero uses 1.0; the footer uses 0.8; smaller sizes drop to 0.6 and 0.5. This was the de facto resolution from v0.5's open rule-weight question, now on the record explicitly.

The foundry caption drops below 12pt display size. At 12pt and below, the mono caption ("EST. 2026 — DUNIN7 — MIAMI") becomes unreadable and looks like a fleck of dirt. At 10pt the rule drops too — the wordmark stands alone as a typographic line.

Below 10pt the wordmark stops working entirely. At roughly 9pt the serifs of IBM Plex Serif begin to disintegrate into pixel mush. Below the minimum, switch to the stamp mark.

Geometry travels unchanged. The canonical geometry — viewBox 0 0 120 120, square 20/20/80/80 stroke 2.5, L path M40 40 L40 88 L78 88 stroke 16, iron-oxide square at 74/84/8/8 — is emitted at every scale. The browser rasterizes from the SVG, so the mark remains crisp from 128px down to 16px without adjustments.

No minimum size was defined, because the mark survives at 16px. Browsers render it as a distinct stamp silhouette with the iron-oxide square still visible as a colored pixel cluster. For print at smaller physical sizes (4mm-ish favicons in a masthead strip), a one-color variant is recommended — see Part five.

Inversion rule. Dark-mode stamp inverts the square fill (press-ink → cartridge flips to press-ink → cartridge) and the L stroke. The iron-oxide accent square is unchanged — same hex #B55537, same position. Iron-oxide is color-stable and reads correctly on both grounds.

Confirmed in loomworks-brand-reconsideration-v0_4.html — the "Favicon geometry unified" fix that made light and dark use identical SVG geometry, differing only in fills.

Proportion: stamp at 64px, wordmark at hero scale (240×54). The stamp's visual height (80/120 of its viewBox = about 43px at 64px width) is calibrated to sit slightly shorter than the wordmark's LOOMWORKS line but taller than the rule-to-caption span. This creates optical balance rather than mechanical height-matching.

Gap: 1.25rem (20px) between stamp edge and wordmark — roughly ¼ of the stamp's width, which is enough air to let both marks read as separate objects while still clearly belonging together.

Use: product header chrome, business-card fronts, e-mail signatures, slide footers. Anywhere the full "Loomworks as a foundry" read is wanted and there is enough horizontal space for it.

Proportion: stamp at 72px, wordmark at footer scale (200×48). The vertical lockup reads taller and more ceremonial — the stamp becomes the emblem, the wordmark becomes the signature below it. Used where the arrangement has time and space to be read.

Gap: 1.25rem (20px) between stamp bottom and LOOMWORKS baseline-top. Symmetric with the horizontal lockup's gap, which keeps the two configurations feeling related.

Use: document title pages, first-run splash screens, printed cover pages, anything where the brand announces itself rather than merely signs. The vertical configuration is never used in-product — it reads too ceremonial for utility surfaces.

Standalone is the default. The wordmark alone covers ~80% of use cases (formal signatures, landing heroes, footers, long-form body). The stamp alone covers another ~15% (favicons, app icons, compact product chrome, in-text inline marks). Lockups are reserved for the ~5% of contexts where the brand is announcing itself formally.

Do not use lockups inside the product. An Operator inside Loomworks has already arrived — the brand does not need to reintroduce itself at every turn. Inside the product, standalone is always correct.

Grammar: LOOMWORKS sits first, as the product. DUNIN7 appears as the manufacturer — after a rule, in IBM Plex Mono uppercase tracked — so the composition reads as this is Loomworks, made by DUNIN7. Never "DUNIN7 Loomworks" as a compound brand; that would subordinate the product in a way the positioning does not want.

When the cosign appears: always in footers and formal signatures, optionally in public-facing document mastheads, never inside the product. Inside, the standalone stamp or wordmark is sufficient.

What about Forge? Forge is a sibling product under DUNIN7, not a parent of Loomworks. The cosign never includes Forge. If the two products need to appear on the same page (e.g., a DUNIN7 product page listing both), each appears with its own independent cosign, not chained together.

The cartridge-filled square holds. Because the stamp mark carries its own cartridge-fill ground (#F2EDE0 inside the square border), it reads as a stamped object onto the room, regardless of the room's tint. The iron-oxide accent is unaffected — it renders the same on every background.

Shaping room is the warmest pairing. The warm terracotta of the Shaping room is closest in temperature to the iron-oxide accent. This creates a subtle but real reinforcement — Shaping is where amendments happen, and the mark's iron-oxide is the amend color. Marks shown in Shaping contexts read as slightly more active; this is appropriate rather than accidental.

Memory room is the coolest pairing. The cool grey of Memory contrasts most with the warm cartridge fill of the stamp, giving maximum visual separation. This is right — Memory is contemplation, the mark's strongest presence, the brand signing what is retained.

Cartridge and bleached are functionally identical for the mark. The stamp's fill is cartridge (#F2EDE0); on bleached (#FFFCF5) the mark reads as a slightly warm object on a slightly cool page. The difference is intentional and desirable — bleached is for moments where maximum clarity is wanted (mastheads, form inputs), and the small color shift of the mark against the page reinforces that it is a considered object, not part of the page.

Vellum is the warmest paper. On vellum, the stamp's cartridge fill is nearly indistinguishable from the page. This is deliberate — vellum is used for set-aside or archival contexts, where the mark should feel integrated rather than stamped-on.

Press-ink switches to dark mode inversion. When the page is press-ink, the stamp must flip its fill-stroke assignment. The rule is strict: on any ground darker than #5A5450, the stamp uses dark-mode geometry.

Wordmark has no carried ground. Unlike the stamp (which carries its own cartridge fill), the wordmark is pure typography — it takes on whatever page it sits on. The ink switches to cartridge (#F2EDE0) when reversed against press-ink, and the caption softens to brass (#A89B7E) to keep it from shouting on dark ground.

On room tints (memory, manifestation, shaping, rendering), the wordmark uses press-ink as usual — the tints are light enough that contrast holds and the brand does not fragment across environments.

One-color. When the print method cannot carry the iron-oxide accent (black-and-white laser, faxed page, photocopy), the iron-oxide square goes to press-ink. The mark loses its accent but keeps its silhouette. This is the form used in printed invoices, legal documents, single-color rubber-stamp reproductions.

Reversed. On any dark ground where iron-oxide would clash with the ground color (dark red, dark orange, high-contrast brand partner backgrounds), the full mark goes to cartridge-on-press-ink, with the iron-oxide square becoming cartridge too. This is a tertiary form, used rarely.

Watermark. At 25% opacity with the square-fill removed, the mark becomes a background watermark — suitable for document backgrounds, draft overlays, or set-aside indicators on archival material. The opacity is fixed at 25%; anything lighter disappears on light grounds, anything darker competes with body content.

Embossed / blind. For printing on uncoated stock where the iron-oxide doesn't hold (thick letterpress paper, embossed business cards, blind-debossed covers), the mark reduces to the outline square and bolder L alone. The iron-oxide accent is dropped entirely — it cannot survive embossing without color. Stroke weights thicken slightly (2.5 → 3.5 for square, 16 → 18 for L) to compensate for the visual softening that embossing produces.

Principle: rule stroke-width = LOOMWORKS font-size × ≈0.045. This is the optical ratio that keeps the rule visually consistent with the wordmark's weight across sizes. Rounded to one decimal for implementation.

The three candidate weights from v0.5 (hairline, standard, heavier) were never meant as a one-pick choice — they were meant to map to scale. The hairline candidate is now "minimum-and-smaller"; standard is the middle rungs; heavier maps to the hero scale.

Why two forms. The display logotype (LOOMWORKS) reads as a mark — a stamp, a signature, a foundry imprint. The prose reference (Loomworks) reads as a word. The New York Times does this; Basecamp does this; any brand with a typographic logotype distinct from its running-text name does this. It respects the reader's expectation that text within a sentence behaves like text.

Where ALL CAPS prose would fail. "Operators begin in LOOMWORKS by setting the seed." reads as shouting — the eye pauses on the all-caps word and interprets it as emphasis, which is not the intent. "Operators begin in Loomworks by setting the seed." reads naturally, as a proper noun sitting in a sentence.

Legal / URL form (loomworks) is the third form, used in loomworks.com, @loomworks, filesystem identifiers, and anywhere the context demands lowercase technical form.