{"product_id":"obsidian-core-bit-by-zenesis-1-3-8","title":"Zenesis Obsidian Core Bit – 1-3\/8 in., 5\/8 in.-11, Wet or Dry, for Quartzite \u0026 Porcelain","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"intro\"\u003e\n\u003cp\u003eThe Zenesis Obsidian Core Bit is a 1-3\/8 in. wet-or-dry diamond core bit with patterned diamond segments for drilling clean holes in quartzite, porcelain, granite, marble, ceramic, engineered stone and Dekton on an angle grinder or polisher.\u003c\/p\u003e\n\u003cp\u003eObsidian is the name of Zenesis's own premium line; the segments use the Zenesis pattern-set diamond arrangement rather than random diamond placement, which Zenesis states gives up to 70% longer life. Brazed diamond on the outside and inside of the barrel keeps the bit from binding in the hole and lets the plug come out. Zenesis positions this as its bit for the hardest material, quartzite included. If every hole is drilled wet and porcelain chipping is the main worry, the Zenesis Z-Thin Wall Core Bit has a continuous thin rim built for that.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1-3\/8 in. drilling diameter\u003c\/li\u003e\n\u003cli\u003e5\/8 in.-11 thread, fits angle grinders and polishers\u003c\/li\u003e\n\u003cli\u003eWet or dry use\u003c\/li\u003e\n\u003cli\u003e8 mm segment height\u003c\/li\u003e\n\u003cli\u003eZenesis pattern diamond segments, up to 70% longer life than random-pattern segments (Zenesis claim)\u003c\/li\u003e\n\u003cli\u003eDrop segments for durability and weld protection\u003c\/li\u003e\n\u003cli\u003eDepth gauge lines at 20 mm and 30 mm\u003c\/li\u003e\n\u003cli\u003eBrazed diamond on the outside and inside of the barrel to prevent binding and ease plug removal\u003c\/li\u003e\n\u003cli\u003eZenesis materials: porcelain, all natural stone, engineered stone, ceramic, Dekton, quartzite\u003c\/li\u003e\n\u003cli\u003eOne of 7 sizes in the line, from 1-1\/4 in. to 3 in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ideal-for\"\u003e\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eFabricators and installers who want one 1-3\/8 in. faucet-hole bit that drills quartzite and porcelain as well as granite and engineered stone, and who need to run dry on site as often as wet in the shop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eCan this bit be used dry?\u003c\/h4\u003e\n\u003cp\u003eYes. Zenesis rates the Obsidian line for dry and wet use. Water still extends segment life and keeps dust down, so use it where you can.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eWill it drill quartzite?\u003c\/h4\u003e\n\u003cp\u003eYes. Quartzite is one of the materials Zenesis publishes for this line, alongside porcelain, granite, marble, ceramic, engineered stone and Dekton.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eWhat thread does it have?\u003c\/h4\u003e\n\u003cp\u003e5\/8 in.-11, so it fits standard angle grinders and stone polishers without an adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eWhat are the lines on the barrel?\u003c\/h4\u003e\n\u003cp\u003eDepth gauges at 20 mm and 30 mm, so you can see how far you are into a 2 cm or 3 cm slab without stopping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eIs this an Obsidian Industrial product?\u003c\/h4\u003e\n\u003cp\u003eNo. Obsidian is Zenesis's own product-line name for this core bit and its matching bridge saw blade; the bit is made by Zenesis and sold here by Obsidian Industrial.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Zenesis","offers":[{"title":"Default Title","offer_id":52427172217052,"sku":"TST ZDGUL035B4","price":94.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0841\/5713\/7116\/files\/271c9d24-35b0-46a4-ab10-72a9f2d736d6.png?v=1788549242","url":"https:\/\/obsidian-industrial.com\/products\/obsidian-core-bit-by-zenesis-1-3-8","provider":"Obsidian Industrial","version":"1.0","type":"link"}