Ink Lab
Ink Lab: research for calligraphy inks
Ink Lab overview
Dip‑pen calligraphy inks span centuries and have evolved from simple carbon or iron gall mixtures to modern pigment‑rich colours. Calligraphers use ink labs to explore recipes, test different brands and learn how to mix inks to suit their scripts and paper. A well‑organised ink‑lab section should briefly describe the purpose of the lab, how the pages are organised, who benefits from the content (beginners versus experienced scribes), and provide links to practical resources and tools (nibs, holders, mixing trays, jars).
The Calligraphy Ink Lab can be organised into four sections:
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Ink recipes – historical and modern recipes to make your own inks.
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Ink tests – how different inks behave on various papers and nibs.
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Mixing & preparation – guidance on adjusting consistency and storing inks.
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Best inks for calligraphy – a curated list of commercial inks with notes about usability and aesthetic qualities.
Users should know whether the information is aimed at beginners (learning basic strokes) or advanced calligraphers (looking for archival inks or unusual colours), and each section should link to the necessary tools (measuring spoons, gum arabic, ferric sulphate, jars, dropper bottles).
Ink recipes
Ink recipes overview
Historically calligraphy inks fell into two families: carbon‑based inks (e.g., sumi) and tannin‑iron inks (e.g., iron gall). Commercial brown inks such as walnut ink are also popular. A modern ink lab should explain these families, recommend when to make your own ink and offer recipes with safety and archival notes. Creating ink at home gives calligraphers control over colour, opacity and flow, but it comes with a risk of spoilage or corrosion if ingredients are mismanaged. Include a disclaimer that experimental recipes are not always archival and that test batches should be made in small quantities.
Who these recipes are for
Home‑made ink recipes suit calligraphers who enjoy experimentation, want to achieve unusual colours, or need an inexpensive practice ink. Beginners who simply need a reliable ink can use ready‑made black inks and may skip this section. Intermediate or advanced calligraphers interested in historic scripts or custom colours will benefit from iron gall or walnut ink recipes.
Why ink preparation matters
Making ink teaches calligraphers about the chemistry and physics behind ink flow. For example, classic iron gall inks are formed by mixing tannins (from oak galls) with iron sulphate; gum arabic is added as a binder to improve flow . However the reaction produces acidic by‑products that can corrode paper , so modern iron gall formulations reduce acidity. Walnut ink, derived from walnut husks or crystals, produces a deep brown colour; it is watery and transparent, so calligraphers often add a little gum arabic or dilute crystals to adjust flow . Understanding these interactions helps when troubleshooting flow, opacity and drying time.
Simple recipes
Iron gall ink
An accessible recipe uses 5 g of crushed oak galls soaked overnight in 100 ml of warm water (or red wine). Strain the liquid to extract the tannins, then slowly mix in 5 g of ferrous sulphate (iron sulphate). Stir until the solution turns dark. Add 1–2 ml of gum arabic to improve flow . Store in a glass jar. Note that iron gall ink darkens as it oxidises, and it can corrode paper if too acidic . Reduce corrosiveness by adding a small pinch of calcium carbonate and avoid using it on valuable documents.
Walnut ink
Traditional walnut ink is made by boiling green walnut husks; modern calligraphers often dissolve pre‑made crystals in warm water. Use 2–3 teaspoons of walnut crystals per 60 ml of water and stir until dissolved. For more opacity, add a drop of liquid gum arabic. Walnut ink dries to a deep brown and has a watery consistency , so adjust water for desired opacity.
Sumi ink substitute
Real sumi ink is made by grinding soot and glue into solid sticks that are then ground with water. Calligraphers can make a liquid substitute by mixing a small amount of finely ground lampblack (carbon black) with distilled water and a drop of gum arabic. This recipe produces a smooth, matte ink similar to commercial sumi ink, which is prized for its velvety texture and ability to be diluted while staying opaque .
Colourful inks
Use gouache or watercolour paints to create custom coloured inks by mixing pigment with a few drops of water and a drop of gum arabic. Metallic mica powders can be blended with gum arabic and water to create shimmering golds or silvers; these are not archival but are popular for decorative pieces.
Common mistakes
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Wrong proportions: adding too much iron sulphate in iron gall ink can make it excessively acidic and prone to eating through paper .
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Skipping binder: homemade inks without gum arabic can have poor flow and sediment quickly. Add at least 1 ml of gum arabic per 100 ml ink to improve flow .
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Using tap water: minerals in tap water may cause precipitation; distilled water is safer.
Related tools and materials
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Oak galls, ferrous sulphate, walnut crystals, gum arabic, lampblack powder.
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Measuring spoons, glass jars with lids, pipettes.
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Dropper bottles for dispensing finished ink.
Ink tests
Ink tests overview
Testing inks is essential to understand how a specific ink behaves on different papers and nibs. When reviewing an ink, it is useful to record its flow, opacity, drying time, smudge resistance, and interaction with paper. A simple test sheet can include separate rows for each ink on different paper types (e.g., hot‑press watercolour paper, Rhodia pad, handmade paper).
What is being tested
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Flow and consistency – check whether the ink flows smoothly from the nib without skipping or flooding. Sumi ink, for example, flows well out of the bottle and can be diluted while remaining opaque , whereas thicker inks like Ziller’s soot black require patience to mix because they have a paint‑like consistency.
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Opacity and coverage – test whether the ink produces a solid black or brown line on light paper and whether it remains visible on dark paper. Dr PH Martin’s Bleed Proof White is very opaque and bright on dark paper but needs to be diluted into a flowable consistency . Walnut ink, by contrast, is transparent and looks best on light‑coloured paper .
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Writing performance – test how easily the ink writes with common nibs (e.g., Nikko G, Zebra G, Brause EF66). Sumi ink is a favourite practice ink because it is smooth and velvety, while Bombay India inks are thinner and may not be suitable for beginners.
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Paper interaction – observe whether the ink feathers or bleeds. Sumi ink usually performs well on many paper types and can be stabilised with a little gum arabic if bleeding occurs . Walnut ink tends to bleed on unsized paper because it is watery ; using heavier paper or adding gum arabic can improve results.
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Smudge and water resistance – some inks are waterproof when dry (e.g., Ziller Soot Black is completely waterproof and used when combining calligraphy with watercolour), while others remain water‑soluble and can blur when painted over.
Comparison notes
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Sumi ink vs India ink: both are carbon based; sumi is smoother and may require dilution; India ink can substitute when sumi is not available. Sumi dries with a matte sheen.
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Iron gall ink: flows cleanly and produces crisp strokes. Its colour darkens as it oxidises.
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Walnut ink: gives an earthy, vintage hue but is watery and may be challenging for beginners.
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Metallic inks (Finetec) need to be mixed with water; they are opaque and reflective and suitable for dark papers.
Related tools and materials
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A selection of papers (Rhodia, Clairefontaine, cotton rag).
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Common nibs and holders for consistency.
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Water droppers, mixing jars, blotting paper.
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A worksheet for recording results (columns for ink name, paper, flow, opacity, drying time, notes).
Mixing & preparation
Overview and why preparation matters
Many commercial inks can be used straight from the bottle, but calligraphers often adjust them to suit the script, nib and paper. Thicker inks may require dilution; thin inks may need gum arabic to control flow; pigments often need thorough mixing to disperse. Preparation ensures consistent lines and prevents frustration with skipping or flooding. Good mixing practices also help prolong the life of nibs and prevent waste.
Basic mixing process
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Diluting concentrated inks – Some inks, such as Dr PH Martin’s Bleed Proof White, come as a thick paste; they must be diluted with distilled water and stirred thoroughly to achieve a fluid consistency .
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Thickening runny inks – When an ink is too watery and bleeds, add a drop or two of liquid gum arabic. For example, adding gum arabic to Sumi ink can prevent bleeding on absorbent paper .
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Mixing metallic or gouache inks – Metallic watercolours or gouache should be mixed with water to the consistency of whole milk. Start with a small amount of pigment in a palette, add a few drops of water, and mix with a brush. Add a drop of gum arabic to improve adhesion. Finetec metallic paints need to be activated with water before being used with a dip pen .
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Combining colours – To customise colours, mix different inks or pigments in a small jar, noting the proportions.
Adjusting consistency and flow
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Test and adjust – Dip a nib into the ink and draw a few lines. If the ink puddles or spreads, add more gum arabic; if it is too thick and flow is slow, add a drop of water. Repeat until the lines are smooth and consistent.
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Keep bottles clean – Always mix with clean tools to avoid introducing dust or mould.
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Shake or stir before each use – Pigments can settle quickly, especially metallic or iron gall inks; gentle stirring ensures uniform colour.
Preparing for writing
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Use dinky dips or small jars – Decant a small amount of ink into a wide‑mouth container to allow easy dipping and reduce contamination of the main bottle.
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Position paper and holders – The paper should be rotated so the main downstrokes follow the natural pull towards the body; this helps maintain the proper slant (approx. 55° for Copperplate) .
Common mistakes
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Over‑diluting – adding too much water can cause feathering and poor coverage; always add water gradually.
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Too much gum arabic – excessive gum arabic makes ink sticky and can clog the nib, causing blots. Start with one drop per 30 ml and adjust as needed.
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Ignoring drying time – thick metallic and gouache inks dry slowly; touching the page too soon will smudge the ink.
Related tools and materials
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Distilled water, gum arabic (liquid or crystals).
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Paintbrushes, palettes or mixing pans.
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“Dinky dip” ink wells, pipettes, stir sticks.
Best inks for calligraphy
Overview and criteria
When selecting commercially made inks, calligraphers consider attributes such as flow, opacity, lightfastness, water resistance, clean‑up, and suitability for different papers. A good beginners’ ink should be easy to use, forgiving on nibs, and reasonably priced; advanced calligraphers may prioritise archival qualities or special effects.
Beginner‑friendly inks
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Sumi ink – Sumi is a smooth, velvety black ink that can be diluted without becoming grey and dries with a matte sheen. It is lightfast and waterproof . If the ink thickens over time, adding water and stirring restores its flow. Beginners appreciate its forgiving nature on various paper types .
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Walnut ink – Walnut ink provides an earthy, vintage hue. It is watery and transparent, making it more challenging for beginners, but its subtle colour is popular for modern calligraphy.
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Iron gall ink – Offers excellent flow and produces clean, crisp strokes. The colour darkens as it oxidises. Historically used for centuries, it adds an old‑world feel but can corrode paper if not properly formulated .
Inks for practice and general use
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Ziller Soot Black – A pigmented acrylic ink that is completely waterproof when dry, making it ideal for combining calligraphy with watercolour or painting over lettering. Its thick, paint‑like consistency requires patience to mix.
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Dr PH Martin’s Bleed Proof White – A thick, opaque white ink/paste that must be diluted; it produces bright white lines on dark paper and can be used as a base for mixing pastel colours .
Inks for visual impact
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Finetec metallic watercolours – Not traditional inks but widely used for metallic lettering; they are sold in solid pans and must be mixed with water to form a liquid. They create opaque, reflective lettering that stands out on dark paper . Finetec offers a wide range of golds, silvers and coloured metallics .
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Dr PH Martin’s Bombay India inks – Highly pigmented and lightfast, available in many colours. They are thinner than sumi ink and not recommended for absolute beginners but provide bright hues for more experienced calligraphers. Bombay inks may show gradation within strokes and are sold in droppers that are not dip‑pen friendly, so decant into jars before use.
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Gouache‑based “inks” – Mix watercolour or gouache with water and gum arabic to create custom colours. This method provides endless colour choices and matte finishes. Metallic and pearlescent powders can also be mixed to create gold or shimmering inks (e.g., Pearl Ex).
Things to watch for
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Paper compatibility – Some inks bleed or feather on inexpensive papers. Testing is crucial (see ink tests above).
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Viscosity – Thick inks (e.g., acrylic) may cause skipping if too thick; thin inks may bleed if too watery. Adjust with water or gum arabic.
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Container design – Bottles with narrow openings are inconvenient for dip pens; decant into wide‑mouth jars or use dinky dips.
How to choose the right ink
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Define your purpose: practice, final artwork, wedding envelopes, or metallic effects.
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Test on your preferred paper: check for feathering, bleed, and drying time.
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Consider maintenance: some pigmented inks require thorough cleaning of nibs, while carbon inks may dry quickly and clog.
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Start with a reliable basic black like sumi or walnut ink, then branch into colours.
Related tools and materials
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Ink bottles, droppers, mixing jars, pipettes.
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Broad selection of nibs and holders to test compatibility.
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Paper types for testing.
How to explore ink resources
Encourage readers to experiment with different inks but to keep notes about mixtures, paper compatibility, dilution ratios and nib choice. Provide links to trustworthy suppliers for gum arabic, oak galls, walnut crystals, Finetec palettes and high‑quality ink brands. Suggest creating an ink journal: for each ink, record the recipe or brand, the date mixed or opened, test results on various papers, and comments on flow and drying time.