{"product_id":"ichimonji-genno-japanese-hand-made-hammer-by-kouzaburo-30-monme","title":"Ichimonji Genno Japanese Hand Made Hammer by Kouzaburo - 30 Monme","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eSmith name: \u003cmeta charset=\"utf-8\"\u003e \u003cem\u003e\u003cstrong\u003eHasegawa Kouzaburo (1935~2004)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eShape:\u003cem\u003e\u003cstrong\u003e \u003cmeta charset=\"utf-8\"\u003eIchimonji\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eType: \u003cmeta charset=\"utf-8\"\u003e\u003cem\u003e\u003cstrong\u003eHaganetsuki (\u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003eHardened steel is attached to both ends)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eWeight:\u003cspan\u003e \u003cem\u003e\u003cstrong\u003e121\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cem\u003e\u003cstrong\u003eg \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eHeight: \u003cem\u003e\u003cstrong\u003e57mm\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eManufacture Era:\u003cspan\u003e \u003cem\u003e\u003cstrong\u003eBefore 1970\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cem\u003e\u003cstrong\u003e (according to collector’s memory)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eAccessories：\u003cem\u003e\u003cstrong\u003e-\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"product-info__block-item\" data-block-type=\"description\"\u003e\n\u003cdiv class=\"prose\"\u003e\n\u003cp\u003eAdditional Information:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cem\u003eUnused, in good condition. \u003cmeta charset=\"utf-8\"\u003eThe collector has a silver hammer of the same weight and shape (later work),and I chose this earlier work. \u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eI chose it for three reasons. The first is that the black finish of the Genno surface is not easy to rust, while the silver one is very easy to rust.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThe second reason is that this early Genno was made with greater precision. I used an electronic caliper with an accuracy of 0.00mm to measure some data of this Genno, as shown in the last two pictures.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThe last reason, and the one I value most, is that the aspect ratio of its square hole is more reasonable. \u003cmeta charset=\"utf-8\"\u003eIn the article 「\u003cspan\u003e「Shape of Carpentry Tools - About the Genno，[Part 3] Holes and Handle」, p38, Knife Magazine No. 10, 2010.\u003c\/span\u003e」 by Mr. Tsuchida Noboru, it is mentioned:\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cem\u003e“To the extent that the strength at the tip of the hammer handle can be maintained, it is best to make it as small as possible. A hole with a vertical-to-horizontal ratio of about 3:1 is, based on experience, considered an effective design.However, the more elongated, narrower, and smaller the hole is, the more advanced manufacturing techniques will be required.”\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThe hole of this hammer has a short side of 4.75mm and a long side of 13.25mm(as the third photo from the end), with an aspect ratio of about 2.8:1. The silver hammer of the late work has an aspect ratio of about 2.5:1 (by my visual comparison).\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe hammer is an early work (In addition to \"Kosaburo\/幸三郎\", his later works have the \"Hasegawa\/長谷川\" mark.) of the blacksmith and has the rare black finish. Most haganetsuki hammers are in a silver finish. It comes from the same collector as this hammer head —— \u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(0, 170, 255);\" href=\"https:\/\/tenmoku0701.myshopify.com\/products\/genno-japanese-hand-made-hammer-by-kouzaburo-80-monme\" target=\"_blank\"\u003eGenno Japanese Hand Made Hammer by Kouzaburo - 80 Monme\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv data-block-type=\"variant-picker\" class=\"product-info__block-item\"\u003e\n\u003cem\u003e\u003cstrong\u003eI learned from Mr. Tsuchida Noboru that small Genno is suitable for thin plane blades to do \"Uradashi\". Although it will be slower than the larger and heavier \u003cmeta charset=\"utf-8\"\u003eGenno, it can improve precision and make it easier to make \"Idoura\". \u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/div\u003e\n\u003cdiv data-block-type=\"variant-picker\" class=\"product-info__block-item\"\u003e\u003cem\u003e\u003cstrong\u003eThe video below shows the blacksmith making a Haganetsuki square hammer.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv data-block-type=\"variant-picker\" class=\"product-info__block-item\"\u003e\n\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003ca style=\"color: rgb(0, 170, 255);\" rel=\"noopener\" href=\"https:\/\/www.youtube.com\/watch?v=UBtMQBjABhg\u0026amp;t=225s\" target=\"_blank\"\u003ehttps:\/\/www.youtube.com\/watch?v=UBtMQBjABhg\u0026amp;t=225s\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-info__block-item\" data-block-type=\"quantity-selector\"\u003e\u003cem\u003e\u003cstrong\u003e※ Two photos with wooden boards as background are the color of the hammer under natural light.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003c!----\u003e","brand":"TENMOKU","offers":[{"title":"Default Title","offer_id":47061060780270,"sku":null,"price":74000.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0162\/5326\/files\/DSF7102.jpg?v=1760447466","url":"https:\/\/tenmoku0701.myshopify.com\/zh\/products\/ichimonji-genno-japanese-hand-made-hammer-by-kouzaburo-30-monme","provider":"TENMOKU","version":"1.0","type":"link"}