{"product_id":"hongdian-d1-skeleton-piston-fountain-pen","title":"Hongdian D1 Skeleton Piston Fountain Pen","description":"\u003ch2\u003eHongdian D1 Skeleton Piston Fountain Pen\u003c\/h2\u003e\u003cp\u003eThe Hongdian D1 Skeleton Piston Fountain Pen pairs avant-garde architectural styling with the generous ink reservoir of an integrated piston filler. Encased in a precision-cut stainless steel hollow skeleton overlay set against transparent smoked resin, this striking demonstrator pen provides a dramatic multi-layered view of ink movement and inner mechanics. Fitted with an iridium fine nib engraved with an auspicious Chinese knot motif, the Hongdian D1 weighs a well-balanced 23.5 grams capped to deliver a steady, luxurious, and ultra-smooth daily writing experience.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHollow Skeleton Armor:\u003c\/strong\u003e Precision-carved stainless steel skeleton frame protects and accentuates a transparent smoked acrylic inner barrel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Piston Mechanism:\u003c\/strong\u003e Generous built-in ink reservoir draws bottled fountain pen ink directly with a smooth twist of the rear blind cap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngraved Chinese Knot Nib:\u003c\/strong\u003e Precision-ground stainless steel nib tipped with durable iridium features an auspicious knot engraving for smooth, skip-free writing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Ink Monitoring:\u003c\/strong\u003e Layered demonstrator reservoir lets you view ink colors and effortlessly monitor remaining ink volume at any time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErgonomic Balanced Weight:\u003c\/strong\u003e Capped at an optimal 23.5 grams with a contoured grip section designed for comfortable, fatigue-free long writing sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Hongdian\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Stainless Steel Hollow Skeleton \u0026amp; Transparent Acrylic Resin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNib Sizes:\u003c\/strong\u003e Extra Fine (EF), Fine (F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNib Material:\u003c\/strong\u003e Stainless Steel with Iridium Tip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilling System:\u003c\/strong\u003e Integrated Piston Filler (Bottled Ink Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapped Length:\u003c\/strong\u003e 138 mm (5.43 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosted Length:\u003c\/strong\u003e 150 mm (5.91 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 13 mm (0.51 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 23.5 g (0.83 oz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCap Type:\u003c\/strong\u003e Screw-on threaded cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eHow do you fill the Hongdian D1 Fountain Pen?\u003c\/h4\u003e\u003cp\u003eThe D1 utilizes a built-in piston filling system. Unscrew the rear end knob, submerge the nib into bottled fountain pen ink, and twist the piston knob to draw ink directly into the high-capacity barrel.\u003c\/p\u003e\u003ch4\u003eCan the Hongdian D1 use ink cartridges?\u003c\/h4\u003e\u003cp\u003eNo, the D1 is a dedicated piston-fill fountain pen engineered specifically for bottled fountain pen inks to maximize ink storage and provide an authentic fountain pen ritual.\u003c\/p\u003e\u003ch4\u003eWhat is the purpose of the skeleton overlay?\u003c\/h4\u003e\u003cp\u003eThe stainless steel hollow skeleton provides exterior structural protection and an architectural aesthetic while letting you view ink sloshing through the cutouts.\u003c\/p\u003e\u003ch4\u003eDoes the Hongdian D1 cap post securely?\u003c\/h4\u003e\u003cp\u003eYes, the cap posts securely onto the rear end, maintaining a balanced center of gravity whether you choose to write posted or unposted.\u003c\/p\u003e\u003ch4\u003eWhat does the nib engraving signify?\u003c\/h4\u003e\u003cp\u003eThe nib features an intricately carved Chinese knot, a traditional artisanal symbol of happiness, longevity, and good fortune.\u003c\/p\u003e","brand":"Hongdian","offers":[{"title":"Silver \/ Extra Fine","offer_id":47409971560482,"sku":"HDD1C-1","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Fine","offer_id":47409971593250,"sku":"HDD1C-2","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Silver Blue \/ Extra Fine","offer_id":47409971626018,"sku":"HDD1C-3","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Silver Blue \/ Fine","offer_id":47409971658786,"sku":"HDD1C-4","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Gun Black \/ Extra Fine","offer_id":47409971691554,"sku":"HDD1C-5","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Gun Black \/ Fine","offer_id":47409971724322,"sku":"HDD1C-6","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0902\/3045\/6354\/files\/O1CN014ZU192210mr3dW7xC__2200693376923.jpg?v=1788920769","url":"https:\/\/www.xypen.com\/products\/hongdian-d1-skeleton-piston-fountain-pen","provider":"XYPen","version":"1.0","type":"link"}