{"product_id":"pentel-extra-fine-brush-pen-sesf30-c-ax-black-water-based-dye-ink-precise-lines","title":"Pentel Extra-Fine Brush Pen SESF30 °C AX – Black, Water-Based Dye Ink, Precise Lines","description":"\u003cp\u003e\u003cstrong\u003ePentel SESF30 °C AX is an extra-fine brush pen in black designed for precise hand lettering, illustration details, and controlled ink work.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eCompact and engineered for accuracy, this single-piece brush pen combines a resilient extra-fine synthetic tip with smooth water-based dye ink for crisp lines and reliable flow. The pen's refined profile and metallic-effect black case make it a discreet, professional choice for artists, calligraphers, urban sketchers, and note-takers who need fine control and consistent colour delivery.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the extra-fine tip improve my lettering and sketching?\u003c\/h3\u003e\n\u003cp\u003eThe SESF30 °C AX's ultra-slim brush tip lets you draw delicate hairlines and refined details without sacrificing flexibility for thicker strokes when you need them. It responds to pressure changes and returns to shape quickly, giving you predictable line variation across repeated strokes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtra-fine synthetic brush tip for crisp hairlines\u003c\/li\u003e\n  \u003cli\u003eResponsive bristles that hold shape under pressure\u003c\/li\u003e\n  \u003cli\u003eSmooth ink flow minimizes skipping on paper\u003c\/li\u003e\n  \u003cli\u003eIdeal for detail work, accents, and thin-to-thick transitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat kind of ink does it use and what results can I expect?\u003c\/h3\u003e\n\u003cp\u003eThis brush pen uses a water-based dye ink that dries quickly and lays down a consistent, saturated black. The ink is easy to blend for tonal washes and pairs well with other water-based media while being suitable for everyday lettering and illustration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWater-based dye formula for smooth, even coverage\u003c\/li\u003e\n  \u003cli\u003eQuick-drying to reduce smudging on most papers\u003c\/li\u003e\n  \u003cli\u003eWorks well for wash effects and light layering\u003c\/li\u003e\n  \u003cli\u003eCompatible with other water-based markers and inks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the pen built and what practical design details matter?\u003c\/h3\u003e\n\u003cp\u003eThe pen features a sleek black barrel with a subtle metallic finish and a coloured banderole on the cap for fast colour identification. The balanced, lightweight body and secure cap make it portable for sketchbooks, workshops, and travel.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetallic-effect black case for a professional look\u003c\/li\u003e\n  \u003cli\u003eColoured banderole on the cap to identify ink colour quickly\u003c\/li\u003e\n  \u003cli\u003eSnap-fit cap keeps tip protected when not in use\u003c\/li\u003e\n  \u003cli\u003eSingle-pen format fits most pen rolls and pockets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and care for the Pentel SESF30 °C AX?\u003c\/h3\u003e\n\u003cp\u003eUse gentle pressure for long, continuous strokes and light pressure for fine hairlines. Store capped and upright if possible; avoid extreme heat to preserve the water-based ink. If clogging occurs, a quick stroke on scrap paper usually restores flow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCap securely after use to prevent drying\u003c\/li\u003e\n  \u003cli\u003eStore at room temperature, away from direct sunlight\u003c\/li\u003e\n  \u003cli\u003eTest on scrap paper before detailed work to check flow\u003c\/li\u003e\n  \u003cli\u003eClean tip gently with water if needed; avoid solvents\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Pentel SESF30 °C AX extra-fine brush pen is for artists, calligraphers, and hobbyists who need a compact, dependable tool for detailed lettering, fine-lined illustrations, and precise accent work. It's well suited to students, journaling enthusiasts, and professionals who prefer water-based inks and a refined, portable pen design.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the ink waterproof?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the SESF30 uses water-based dye ink, which is not waterproof but blends well with water for wash effects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the tip be replaced?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The SESF30 is a single-piece brush pen; the tip is not replaceable, so handle it gently to prolong life.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pentel","offers":[{"title":"Default Title","offer_id":55254624076113,"sku":"B07GZYM2PP","price":32.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/pentel-sesf30-front-view.jpg?v=1791682181","url":"https:\/\/craftiche.co.uk\/products\/pentel-extra-fine-brush-pen-sesf30-c-ax-black-water-based-dye-ink-precise-lines","provider":"Craftiche","version":"1.0","type":"link"}