{"product_id":"hira-ganna-japanese-smoothing-plane-by-shigeharu-70mm","title":"Hira-ganna Japanese Smoothing Plane by Shigeharu - 70mm","description":"\u003cp\u003eSmith name: \u003cem\u003e\u003cstrong\u003eI don't know the blacksmith's detailed name, only that it was custom-made at Shigeharu Hamono in Kyoto.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSteel:\u003cem\u003e\u003cstrong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eTamahagane\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eJigane(Iron part of the blade):\u003cstrong\u003e\u003c\/strong\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eIt might be a type of \u003ci\u003eWatetsu\u003c\/i\u003e (traditional Japanese iron)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBlade Width:\u003cspan\u003e \u003cem\u003e\u003cstrong\u003e70\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cem\u003e\u003cstrong\u003emm\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBlade length:\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003cstrong\u003e105mm\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBlade thickness:\u003cem\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eThe blade near the bevel(about 5.70mm)，Top of Blade（about 9.00mm）\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"product-info__block-item\"\u003e\n\u003cdiv class=\"prose\"\u003e\n\u003cp\u003eBlade Weight: \u003cspan\u003e\u003c\/span\u003e\u003cem\u003e\u003cstrong\u003e323g\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBlade Angles:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e25°\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChip Breaker\u003cspan\u003e \u003c\/span\u003eWidth:\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003cstrong\u003e62mm \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDai manufacture:\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cem\u003e\u003cstrong\u003eUnknown\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDai size(length, width, thickness):\u003cem\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e272mm 86mm 34mm\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eTotal weight:\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003cstrong\u003e1048g\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eManufacture Era:\u003cspan\u003e\u003cem\u003e\u003cstrong\u003e \u003cmeta charset=\"utf-8\"\u003eBefore 1940\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eAdditional Information:\u003cstrong\u003e\u003c\/strong\u003e\u003cem\u003e\u003cstrong\u003e  \u003c\/strong\u003e\u003cstrong\u003eThis is a used plane. The original owner was a miyadaiku (shrine and temple carpenter) in the Kyoto area. I purchased it from his son, who mentioned that his father custom-ordered it about 40 years ago from the famous—and now closed—Shigeharu Cutlery in Kyoto. The hagane (cutting steel) is made of tamahagane, and the jigane (soft iron backing) was forged using antique wakugi (traditional Japanese iron nails) as the raw material.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eI have resharpened the blade: the kireha was sharpened \u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003eith an Uchigumori natural whetstone, while the back was \u003cmeta charset=\"utf-8\"\u003esharpened using a #1000 synthetic waterstone. Based on my personal sharpening feedback, the steel feels quite hard with a certain degree of toughness (sticky feedback); I reckon it could be Tamahagane, or possibly Aogami (Blue Paper Steel).  After being sharpened with the Uchigumori stone, the jigane indeed revealed a rare and distinctive grain pattern. If you zoom in on the photos of the bevel, you can observe continuous, bubble-like blue patterns.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe steel insert (hagane) on this blade is longer than that of a standard blade of the same size. During economic recessions or periods of oversupply, blacksmiths (or sellers) would offer customers this kind of tangible bonus to boost sales. However, Mr. \u003cmeta charset=\"utf-8\"\u003eTsuchida Ichiro explicitly stated that he did not need this kind of 'perk.' I believe his underlying point was that rather than offering such 'extra value,' a blacksmith should focus on the quality of the blade itself.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"TENMOKU","offers":[{"title":"Default Title","offer_id":49382293209326,"sku":null,"price":22000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0162\/5326\/files\/DSF1002_c9caf0db-95d9-41fb-b87a-e2d0429dd863.jpg?v=1786234414","url":"https:\/\/tenmoku0701.myshopify.com\/ja\/products\/hira-ganna-japanese-smoothing-plane-by-shigeharu-70mm","provider":"TENMOKU","version":"1.0","type":"link"}