Explainers · 2026-07-11 · Patreon guide

Patreon for fountain pen creators: tiers, nib metallurgy and ink chemistry documentation, iOS rates, and the Apple Tax in 2026

Fountain pen Patreons retain because the audience faces a documentation gap that YouTube reviews structurally compress away: the video shows ink flowing and the writing feeling smooth, but it does not contain the tine gap measurement in millimeters, the pH of the iron gall ink, the tipping alloy Mohs hardness, or the water resistance test result that determined whether the ink survives a coffee spill. The Patreon tier that keeps fountain pen patrons is the one with the quantified nib geometry, the ink chemistry data sheet, and the vintage pen restoration notes — not the most satisfying ink swatch photograph.

The fountain pen creator subtypes

Nib grinders and tuners: geometry and flow mechanics

Nib grinders and tuners serve an audience that wants to optimize writing instruments beyond what the factory delivers: adjusting tine gap for wetter or drier flow, reshaping tipping balls to produce italic or stub writing angles, correcting scratchy nibs by leveling misaligned tines, or adding spring to stiff steel nibs by score-grinding the sides. The documentation gap for nib grinders is the quantified geometry: tine gap in millimeters (measured with feeler gauge stock 0.05–0.80 mm, or under 10× loupe with calibrated reticle; a standard fine nib optimal gap is 0.15–0.25 mm; medium nib 0.25–0.40 mm; wet/juicy writer 0.40–0.60 mm; gaps above 0.60 mm risk hard-starting or blobbing); tine alignment (photograph taken from above the nib with backlight illumination showing whether the left and right tines are at equal height; low tine corrected by placing on Mylar or higher-grit micromesh and applying gentle pressure on the high side while abrading the low side); and spring force (gram-force measurement by pressing the nib against a kitchen scale through a soft eraser pad at a defined 2 mm of flex travel: a flexible vintage Montblanc will measure 20–40 gf; a stiff modern pilot 80–150 gf).

Tipping material metallurgy: the tipping ball at the end of the nib slit is a hard alloy welded or sintered onto the nib metal. Natural iridosmine mineral (natural alloy of iridium and osmium, also containing ruthenium, platinum group metals) has Mohs hardness 6.5–7 and was used in vintage nibs before the 1960s; modern synthetic tips use ruthenium-iridium alloy (Ru-Ir) or rhodium-platinum alloys with similar hardness; the hard tip must withstand the abrasive drag of paper cellulose fiber (hardness ∼3–4 Mohs) over a lifetime of writing without significant wear; polishing sequence for nib tuning: 400–600 grit micromesh (paper micro-abrasive sheets) for major reshaping; 1,500–2,000 grit for tipping ball contouring; 3,200–6,000 grit for final smoothing; 8,000–12,000 grit for finishing; final strop on smooth copy paper (80 g/m²) to remove remaining abrasive scratches from tipping surface. The patron-exclusive documentation is the before-after tine gap and spring force measurements at each tuning stage, plus the loupe photographs of tipping ball geometry at 40×.

Three tiers for nib grinders. The Correspondent tier ($5–8/month) provides priority on ink sample mailing list and Discord #ink-swatches and #nib-talk. The Nibwork tier ($15–22/month) adds nib geometry worksheets (tine gap, alignment, spring force before and after, recommended gap range for the pen model), micromesh polishing sequence documents, and monthly pen teardown notes. The Atelier tier ($60–80/month, capped 4 patrons) provides one-on-one nib consultation: mail-in pen evaluation and written report, or video review session where the patron shares their nib under a loupe camera.

Ink reviewers and chemists: pH, water resistance, and shading

Ink reviewers and chemists serve the large fountain pen community interested in ink properties beyond the YouTube swatch: systematic chemical characterization distinguishes iron gall inks (complex chemistry, corrosion risk, high water resistance) from standard dye inks (simple solution, low risk, variable water resistance) from pigment inks (suspended solid particles, may clog fine nibs, highest water resistance). Iron gall ink chemistry: the traditional formula combines ferrous sulfate (FeSO₄, iron(II) sulfate) with gallic acid (C₇H₆O₅, 3,4,5-trihydroxybenzoic acid, MW 170.1 Da, extracted from oak galls or tamarind) and tannic acid (a mixture of galloylglucose oligomers); in solution, Fe²+ forms a complex with gallate ions (galloferrous complex) that is pale blue-green, providing only light initial marks on paper; upon exposure to atmospheric oxygen, galloferrous is oxidized to galloferric (Fe³+ complex), which precipitates as a dark blue-black insoluble compound (ferric gallate) within the paper fiber, the pigment responsible for the permanent marks in medieval manuscripts; pH of iron gall inks: 2.0–3.5 (significantly acidic due to gallic and tannic acid content); modern acidified iron gall inks (R&K Salix, Diamine Registrar) pH 2.0–2.5; modern buffered iron gall (Monteverde Noir) pH 3.0–3.5; inks below pH 3.0 carry corrosion risk to steel nibs (particularly the slit, which is thin and has high surface area), aluminum trim rings, and natural rubber sacs.

Standard dye-based inks: the colorant is a water-soluble organic dye molecule (typically anionic azo dyes or anthraquinone dyes for most blues/blacks; cationic dyes for some specialty inks) at concentrations of 2–8% w/w in water with humectants (glycerol, propylene glycol 1–3% to prevent nib drying), surfactants (reduces surface tension, improves paper wetting and ink flow), and a biocide (typically benzalkonium chloride at 0.01–0.1% or sodium benzoate) to prevent microbial growth. pH of dye inks: 4–9 depending on formulation. Pigment inks: the colorant is a solid pigment particle (organic carbon black, phthalocyanine blue, carbon nanoparticles) suspended in a carrier; pigment particle size 50–500 nm for well-dispersed pigment inks (nano pigments can flow through extra-fine nibs); larger particles above 200 nm will block extra-fine nibs and require more frequent cleaning. Water resistance test: write a word sample, allow 24-hour drying, submerge in water for 60 seconds, dry and scan; dye inks: water resistance rating 0 (completely washed) to 5 (fully legible); iron gall post-oxidation: typically 4–5; standard dye inks: typically 0–2; pigment and archival inks: typically 4–5.

Vintage pen restorers and collectors: mechanical repair documentation

Vintage pen restorers serve collectors who buy, restore, and write with vintage filling-system pens from the 1930s–1980s. The documentation gap is the restoration procedure at the component measurement level: rubber sac sizing (sac diameter must match the barrel interior diameter; standard sac sizes #14, #16, #18, #20 numbered by sixteenths of an inch in outer diameter: #18 = 18/16 = 1.125 inch outer diameter; sac fits inside the barrel with 0.5–1.0 mm clearance; sac length = barrel interior length minus 3–5 mm for section fit); pressure bar function (a spring steel bar inside the barrel whose spring force compresses the sac; restoring pressure bars requires cleaning oxidation from pivot points and verifying flat spring geometry against the barrel interior diameter); lever box mechanics (the lever presses the pressure bar downward to collapse the sac for filling; lever spring tension verified by pressing the free end to the barrel surface and confirming a defined spring-back force). iOS rates for fountain pen restoration YouTube: 62–72% iOS; Instagram pen photography collections: 80–88% iOS.

Nib geometry and ink chemistry documentation mechanics

Nib documentation record: pen identification (make, model, year if known, nib size marking: EF/F/M/B/BB or equivalent); nib material (stainless steel vs 14K vs 18K gold, plating if visible: rhodium, gold, bicolor); tipping alloy (iridosmine natural vs synthetic Ru-Ir; visible condition under loupe: rounded symmetric vs asymmetric wear; size relative to nib: small tip = sharper point, large tip = smoother but lower line variation); tine gap (mm, tool used, measurement location); tine alignment (equal/left high/right high from above, amount of misalignment in estimated mm); spring force at 2 mm flex (gf, tool: kitchen scale + soft eraser pad protocol); slit length (mm from breather hole to tipping ball center); flow assessment (dry/normal/wet/very wet on 52 g/m² Rhodia with standard ink at room temperature).

Ink documentation record: manufacturer and name; classification (dye-based, pigment, iron gall, hybrid iron-gall+dye); pH (measured, tool and calibration note); water resistance (0–5 scale, protocol: 24h drying + 60s soak); shading (low/medium/high; photograph of writing sample on 52 g Rhodia dot pad under consistent natural light); lubrication (dry/neutral/lubricated: drag assessment on paper); dry-time on coated paper (seconds on Rhodia); material compatibility notes (iron gall inks: caution with aluminum trim, rubber sac without hardener, steel nib slit corrosion risk if pH < 3.0; pigment inks: not recommended in EF nibs without frequent flushing); recommended pen types (safe for all / avoid vintage sac pens / pigment-compatible all-plastic feed only).

iOS rates and the Apple Tax

Fountain pen creator iOS rates vary by platform: YouTube nib reviews, ink reviews, and pen restoration tutorials 62–75% iOS; Instagram handwriting showcases and ink swatch photography 78–88% iOS; TikTok writing ASMR and ink drop content 75–85% iOS.

Frequently asked questions

Related: Patreon for calligraphy creators · Patreon for hand lettering creators · Patreon for paper arts creators · How the Apple Tax works · All explainers