Patreon for Persian carpet knotting creators: hand-knotted rug construction, Ghiordes and Senneh knot mechanics, KPSI calculation, Tabriz Isfahan Kashan traditions, and Apple Tax 2026

2026-09-25 · ~2,400 words · KeepTier

Hand-knotted carpet weaving — and specifically the Persian carpet knotting tradition — represents one of the most technically demanding and materially complex subjects in the traditional textile arts. Persian carpet construction involves the systematic tying of individual pile knots onto a warp thread foundation, with weft passes between each row of knots to secure the structure, producing a pile textile with a density measured in knots per square inch (KPSI) that directly determines the fineness of the pattern resolution. For Patreon creators, Persian carpet knotting is a high-value niche: the technical content is genuinely complex and requires sustained instruction (knot mechanics, warp tension management, color planning from a cartoon, reading the talim — the Turkish chart notation system), the audience spans traditional textile practitioners, interior design professionals, rug collectors, and cultural heritage enthusiasts, and the iOS-heavy demographics of textile craft audiences apply equally here.

Ghiordes and Senneh knot mechanics

Two primary knot types define the structural vocabulary of hand-knotted Oriental carpet construction. The Ghiordes knot (also called the Turkish knot or symmetrical knot): the pile yarn wraps around two adjacent warp threads, with both yarn ends cut to emerge from the space between the two wrapped warps and from the spaces outside them — producing a symmetric, two-ended pile unit that sits on two warps with both cut ends projecting from the pile face. The Ghiordes knot is more structurally stable than the asymmetrical alternative and handles pile-height variation more predictably; it is the knot of the Anatolian Turkish and Caucasian weaving traditions and is used in northwest Persia (Tabriz uses a variant called the Jufti Tabriz).

The Senneh knot (also called the Persian knot or asymmetrical knot): the pile yarn wraps completely around one warp thread and passes behind the adjacent warp, with the two ends emerging from the same inter-warp space — one end from beside the fully-wrapped warp, one end from beside the half-wrapped warp. The asymmetry means the knot can be oriented left-open (open to the left) or right-open (open to the right), which in practice means different pile directions depending on orientation — skilled weavers use this to manipulate pile direction for shading effects in the finished carpet. The Senneh knot allows higher KPSI than Ghiordes at equivalent warp sett because one knot wraps one warp fully and one partially, enabling finer pattern resolution; it is the knot of Isfahan, Kashan, Tabriz (fine grade), Qom silk carpets, and most high-KPSI Persian weaving centers.

KPSI calculation and design resolution

KPSI (knots per square inch) is the primary quality and resolution metric for hand-knotted carpets. It is calculated by counting the knots visible along one inch of the carpet's horizontal extent (knots per horizontal inch, determined by warp sett — warps per inch) and multiplying by the knots visible along one vertical inch (knots per vertical inch, determined by weft row density — picks per inch after beating). A carpet with 10 warp pairs per inch (Ghiordes knot, 2 warps per knot) and 10 rows of knots per inch has 10 × 10 = 100 KPSI. A fine Isfahan carpet at 30 knot rows per inch with 25 knot columns per inch reaches 750 KPSI. Qom silk carpets at fine quality can reach 1,000–2,500 KPSI, which represents the technical ceiling of hand-knotted pile construction under conventional weaving conditions.

KPSI directly determines pattern fineness: a curved floral motif (the arabesque, the palmette, the Shah Abbas flower) requires sufficient KPSI to render the curve as a smooth diagonal rather than a staircase of square pixels. At 100 KPSI, diagonal curves are clearly stepped; at 400 KPSI, curves appear smooth at normal viewing distance; at 800+ KPSI, extremely fine curvilinear detail (individual leaf veins, figure faces in pictorial carpets) becomes achievable. The relationship between KPSI and design possibility is the central technical concept for a Persian carpet Patreon curriculum: any discussion of regional carpet traditions, yarn selection, or pattern choice is ultimately grounded in the KPSI achievable with the weaver's current setup.

Weft depression and pile height

Weft depression (also called warp depression or suppressed weft) is a structural technique used in high-quality Persian carpet construction to increase effective KPSI by shifting the warp threads to different vertical planes. In a single-level warp, both warps of a knot pair lie in the same plane — depressing the back warp through the weft-tension sequence pushes alternate warps deeper into the carpet structure, so they become invisible from the pile face. With the back warps depressed, the front warps are visible and form the pile-attachment surface; the effective horizontal density increases because the same warp count now presents more attachment points per visible warp. Full warp depression — where back warps are completely concealed — is the hallmark of Isfahan, Kashan, and Khorasan fine weaving. Partial depression (back warp visible but lower than front warp) is characteristic of Tabriz construction. No depression (flat construction, both warps visible) is standard for Caucasian and tribal carpet traditions.

Regional traditions: Tabriz, Isfahan, Kashan

Tabriz (northwestern Iran, East Azerbaijan Province) is the dominant commercial weaving center of Iran and uses the Tabriz loom (a horizontal roller loom that allows very long carpets to be woven without room height constraints) and a specialized hook-and-knife tool called the tebrizî for simultaneously tying and cutting pile knots in a single motion. Tabriz pattern vocabulary draws on the full lexicon of Persian decorative art: medallion-and-corner compositions, pictorial hunting scenes, garden carpet layouts, and geometric tribal forms adapted to commercial scale. Tabriz color palette is among the most varied in Persian weaving — dye knowledge and wool quality are both high, and the commercial context allows for custom palette commissions.

Isfahan (central Iran, Isfahan Province) uses the vertical loom (the Isfahan or Tabriz vertical loom with adjustable tension bars), the Persian asymmetrical knot, and full warp depression to achieve high KPSI. The canonical Isfahan design vocabulary is the arabesque — continuous curvilinear vine scrollwork supporting palmettes, cloud bands, and Shah Abbas flowers — in a rich palette centered on deep red, cobalt blue, ivory, and various shades of green and gold. Isfahan carpets are considered among the finest examples of classical Persian design and are the reference point for discussions of Persian carpet artistic achievement.

Kashan (central Iran, Isfahan Province, Kashan city) specializes in dense, fine-knotted carpets with medallion compositions on deep red or dark blue grounds. Kashan wool quality — specifically the high-lustre Manchester wool imported from Australia and New Zealand in the late 19th and early 20th centuries — is historically noted, and the characteristic sheen of antique Kashan pile is partly attributed to this wool selection. Contemporary Kashan weaving uses local Kork wool (fine, high-lustre fleece from specific Iranian sheep breeds) for quality work. Kashan KPSI ranges from 200–600 in commercial production, with collector-grade pieces reaching 400–600.

Patreon content and Apple Tax

Persian carpet knotting Patreon creators serve a specialized and highly engaged audience: traditional textile practitioners seeking to learn pile knotting from a surface-embroidery background, rug collectors who want technical literacy to evaluate purchases, interior design professionals researching regional traditions, and cultural heritage audiences with Middle Eastern or Central Asian heritage connections. Textile and fiber arts creator channels on Instagram and Pinterest show 68–82% iOS audience penetration. At a $200/month tier structure with 74% iOS under November 2026 Apple Tax: $200 × 0.74 × 0.30 = $44.40/month ($532.80/year) to Apple. At $300/month with 76% iOS: $300 × 0.76 × 0.30 = $68.40/month ($820.80/year). KeepTier provides a web membership page with Stripe Checkout so patrons can subscribe outside the App Store, eliminating the 30% Apple commission for web subscribers.