{"product_id":"166960222","title":"Kaiheki underglaze(100g)","description":"\u003ch2\u003e[Quality \u0026amp; Craftsmanship]\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"High quality Arita blue and white porcelain\" src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc_base64\/Y2FwLTE0LW1pbg.jpg?cmsp_timestamp=20240605201618\"\u003e\u003cbr\u003eFor over half a century, blue and white porcelain (Sometsuke) and Somenishiki ware created using Fukaumi Shouten's Gosu (blue underglaze) have been beloved by royalty and aristocrats worldwide, and proudly exhibited in museums.\u003cbr\u003e\u003cbr\u003e\u003cstrong style=\"color: #005bd3;\"\u003eFeatured on the BBC and Japanese National Television\u003c\/strong\u003e\u003cbr\u003eOur profound history and traditional techniques caught the attention of the world when we were featured on the prestigious UK television series, \u003cstrong\u003eBBC's \u003cem\u003e\"Great Japanese Railway Journeys\"\u003c\/em\u003e\u003c\/strong\u003e.\u003cbr\u003eIn Japan, artists utilizing our Gosu have been featured on prominent programs such as \"Wafu Souhonke\" and NHK's \"Ippin,\" which highlight the nation's finest traditional craftsmanship.\u003cbr\u003e\u003cbr\u003eOur products are also trusted for official signage at research institutions and government agencies throughout Japan. We promise to deliver this world-recognized, authentic Arita Blue directly to your studio.\u003c\/p\u003e\n\u003ch2\u003e[The Manufacturing Process]\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc\/DSC01766-min.jpg?cmsp_timestamp=20221222111934\" alt=\"Gosu production process with traditional stone mill\"\u003e\u003cbr\u003eTo maintain this exceptional quality, it takes more than a month from the start of production to completion for Fukaumi Shouten's Gosu.\u003cbr\u003e\u003cbr\u003eBy combining \u003cstrong\u003e\u003cu\u003eFukaumi Shouten's unique ingredient blend\u003c\/u\u003e\u003c\/strong\u003e, \u003cstrong\u003e\u003cu\u003eour proprietary firing technique (Calcination)\u003c\/u\u003e\u003c\/strong\u003e, and \u003cstrong\u003e\u003cu\u003ethe only stone-milling technology in Japan to micro-pulverize the grains\u003c\/u\u003e\u003c\/strong\u003e, we achieve the ultimate underglaze.\u003cbr\u003e\u003cbr\u003eThrough these rigorous processes, \u003cstrong\u003e\u003cu\u003ebrushstrokes become incredibly smooth, and the Gosu is highly resistant to burning out, even at high concentrations\u003c\/u\u003e\u003c\/strong\u003e.\u003cbr\u003e\u003cstrong\u003e\u003cu\u003eYou will not need to hand-grind the pigment yourself once it arrives; it is ready to use.\u003c\/u\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eFukaumi Shouten is the only historic Gosu manufacturer that sells its products directly online to individuals worldwide. That is why we can offer authentic, professional-grade quality directly from our factory.\u003c\/p\u003e\n\u003cdiv class=\"youtube\" style=\"margin: 30px 0;\"\u003e\u003ciframe width=\"100%\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/1myOuT9yp4s?si=J6uVaUCtCXrHTky3\" title=\"Fukaumi Shouten Gosu Manufacturing Process\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003e[The History of Gosu in Arita]\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc_base64\/a29qb3Bob3Rvcy0yNC1taW4.jpg?cmsp_timestamp=20240605191806\" alt=\"Antique Arita ware showing traditional blue underglaze\"\u003e\u003cbr\u003eThe synthetic Gosu currently used throughout Japan was developed by the Fukaumi family during the early Meiji period (late 19th century).\u003cbr\u003e\u003cbr\u003eIn 1870, the renowned German chemist Gottfried Wagener was invited to Arita.\u003cbr\u003eDr. Wagener taught Heizaemon Fukaumi and his sons, Suminosuke and Takeji, the chemical method of producing the color blue using cobalt.\u003cbr\u003e\u003cbr\u003eFollowing this, the Fukaumi family conducted extensive research and successfully developed a scientific method for producing stable Gosu.\u003cbr\u003eAs a result, vivid and reliable synthetic Gosu began to be widely used in Arita and across Japan, establishing the world-famous \"Japan Blue\".\u003cbr\u003e\u003cbr\u003ePlease experience our premium Gosu, born from centuries of history, tradition, and the power of chemistry.\u003cbr\u003e\u003cimg src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc_base64\/a29qb3Bob3Rvcy0zNS1taW4.jpg?cmsp_timestamp=20240605191806\" alt=\"Fukaumi Shouten Gosu powder and paste\" style=\"margin-top: 15px;\"\u003e\u003c\/p\u003e\n\u003ch2\u003e[How to Use]\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eClay Type\u003c\/strong\u003e: Suitable for both Porcelain and Stoneware\/Earthenware.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFiring Method\u003c\/strong\u003e: Suitable for both Oxidation and Reduction firing.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOptimal Firing Temperature\u003c\/strong\u003e: 1230°C – 1300°C (2246°F – 2372°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e[Firing Conditions for Sample Plates]\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc_base64\/MjAyNDAxR09TVV9zYW1wbGVzLW1pbg.jpg?cmsp_timestamp=20240605194159\" alt=\"Gosu color sample plates fired in reduction\"\u003e\u003cbr\u003eThe color samples shown in the main product images were fired under the following conditions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eClay Body\u003c\/strong\u003e: Amakusa Pottery Stone (Porcelain)\u003cbr\u003e\u003cspan style=\"font-size: 0.85em; color: #666;\"\u003e(Composition: SiO2 72.04%, Al2O3 18.16%, Fe2O3 0.65%, TiO2 0.04%, CaO 0.49%, MgO 0.09%, Na2O 0.58%, K2O 3.00%, Ig.Loss 4.55%)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFiring Temperature \u0026amp; Atmosphere\u003c\/strong\u003e: 1280°C (2336°F) \/ Reduction Firing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"color: #d32f2f; font-weight: bold; margin-top: 10px;\"\u003e*Note: The color of the underglaze will change depending on your clay body and whether you use oxidation or reduction firing. Please test in your own kiln.\u003c\/p\u003e\n\u003ch2\u003e[Frequently Asked Questions]\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt style=\"font-weight: bold; margin-top: 15px;\"\u003eQ: How do I use the pigment?\u003c\/dt\u003e\n\u003cdd style=\"margin-bottom: 10px;\"\u003eA: It arrives in a highly concentrated paste form. Please dilute it with water according to your purpose. For line drawing (outlining), a general guide is 1 part Gosu to 3 parts water. For Dami (washes), use 1 teaspoon of Gosu to 80ml-250ml of water. Please adjust to find your ideal shade.\u003c\/dd\u003e\n\u003cdt style=\"font-weight: bold;\"\u003eQ: Should I add a binder or adhesive (like gum arabic or CMC)?\u003c\/dt\u003e\n\u003cdd style=\"margin-bottom: 10px;\"\u003eA: Our Gosu does not contain added binders to allow you flexibility. If the pigment is not adhering well to your bisque ware, or if your painting process requires touching the surface repeatedly, we recommend adding a small amount of your preferred binder.\u003c\/dd\u003e\n\u003cdt style=\"font-weight: bold;\"\u003eQ: How should I store it if I won't use it for a long time?\u003c\/dt\u003e\n\u003cdd style=\"margin-bottom: 10px;\"\u003eA: We recommend storing it tightly sealed in the container. If it dries out, simply add water and grind it again in a mortar to return it to a paste.\u003c\/dd\u003e\n\u003cdt style=\"font-weight: bold;\"\u003eQ: What causes the pigment to crawl or repel during firing?\u003c\/dt\u003e\n\u003cdd style=\"margin-bottom: 10px;\"\u003eA: Applying the pigment too thickly is the most common cause of crawling. It can also be caused by dust or oil (from hands) on the bisque ware before painting.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003e[Shipping \u0026amp; Postage (International)]\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/img21.shop-pro.jp\/PA01482\/710\/etc_base64\/ZGVsaXZlcnlfMWRheQ.png?cmsp_timestamp=20240605194647\" alt=\"Fast Shipping\"\u003e\u003cbr\u003eIf you place your order \u003cu\u003ebefore noon (JST)\u003c\/u\u003e, it will generally be shipped \u003cspan style=\"color: #d32f2f;\"\u003e\u003cstrong\u003e\u003cu\u003ethe next business day\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e from our factory in Japan.\u003cbr\u003e\u003cem\u003e*If your order includes made-to-order items like specific glazes, the entire order will be shipped once all items are ready.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout Shipping Fees:\u003c\/strong\u003e\u003cbr\u003eShipping costs are \u003cstrong\u003eautomatically calculated at checkout\u003c\/strong\u003e based on the total weight of your order and your delivery address (Country\/Region).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable Shipping Methods:\u003c\/strong\u003e\u003cbr\u003eDuring checkout, you can choose the delivery method that best suits your needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eEMS (Express Mail Service)\u003c\/strong\u003e: Fast and reliable with tracking, but shipping fees are higher. Typically arrives in 3 to 7 days depending on the destination.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSurface Mail (Sea Mail)\u003c\/strong\u003e: The most economical option with lower shipping fees, but delivery is slow. It typically takes 1 to 3 months to arrive.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e*Please note that customs duties or import taxes may apply upon arrival in your country, which are the responsibility of the buyer.\u003c\/em\u003e\u003c\/p\u003e","brand":"株式会社深海商店","offers":[{"title":"Paste 100g","offer_id":49065230762275,"sku":"100580","price":2200.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0523\/0115\/files\/040___EC-min.jpg?v=1770941305","url":"https:\/\/shop.enogu-fukaumi.co.jp\/en-jp\/products\/166960222","provider":"深海商店オンラインストア","version":"1.0","type":"link"}