{"product_id":"jungong-diamond-coated-hole-saw-bit-electroplated-emery-core-drill-for-glass-tile-acrylic-rigid-plastic-6mm-90mm-atradesen","title":"Jungong Diamond Coated Hole Saw Bit | Electroplated Emery Core Drill for Glass, Tile, Acrylic \u0026 Rigid Plastic (6mm - 90mm) - Atradesen","description":"\u003ch2\u003eJungong Premium Diamond-Coated Hole Saw Core Drill Bits (6mm - 90mm)\u003c\/h2\u003e\n\u003cp\u003e\n  Drill clean, smooth, and chip-free holes in brittle and hard materials with our premium Jungong diamond-coated core drill bits, available at \u003ca href=\"https:\/\/atradesen.com\" target=\"_blank\"\u003eAtradesen.com\u003c\/a\u003e. Manufactured in Shanghai, these high-performance hole saws feature a heavy-duty nickel-plated carbon steel body with electroplated industrial diamond grit (emery) on the cutting crown.\n\u003c\/p\u003e\n\u003cp\u003e\n  Designed to be mounted easily on standard handheld electric drills, impact drivers, or bench drills, this professional series offers a highly durable solution for cutting precision holes in glass, ceramic tiles, and rigid synthetic sheets.\n\u003c\/p\u003e\n\n\u003ch3\u003ePerfect for Brittle \u0026amp; Hard Materials\u003c\/h3\u003e\n\u003cp\u003e\n  Specifically optimized for producing clean, circular holes in highly challenging, non-metallic substrates, including:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGlass panels, mirrors, and glass vessels.\u003c\/li\u003e\n  \u003cli\u003eCeramic tiles, porcelain, vitreous china, and clay pottery.\u003c\/li\u003e\n  \u003cli\u003eAcrylic sheets, plexiglass, fiberglass, and rigid PVC\/UPVC plastics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚠️ Critical Water Cooling \u0026amp; Operating Guidelines\u003c\/h3\u003e\n\u003cp\u003e\n  \u003cstrong\u003eTo ensure a clean cut and extend the lifespan of the diamond coating, please strictly adhere to these professional guidelines during operation:\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Water Lubrication:\u003c\/strong\u003e You \u003cstrong\u003emust add water continuously\u003c\/strong\u003e to cool and lubricate the cutting edge while drilling. Dry drilling will generate extreme heat, immediately burning off the diamond grit and rendering the bit useless.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStarting at an Angle (No Pilot Pin):\u003c\/strong\u003e Because these core bits do not have a center pilot drill, they can slip or skate initially. To start, hold the drill at a 45-degree angle to create a shallow crescent groove, then slowly bring the drill perpendicular to the flat surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGentle, Light Pressure:\u003c\/strong\u003e Apply light, gentle down-pressure. Do not force or push the drill. Keep a steady, shake-free grip, especially when breaking through the bottom layer of glass to prevent cracking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2; text-align: left;\"\u003e\n      \u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n      \u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eBrand \u0026amp; Origin\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eJungong Brand (Manufactured in Shanghai, China)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCutting Grit Material\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHigh-Grade Electroplated Emery (Industrial Diamond Particles)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eBody Construction\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHeavy-Duty Carbon Steel with Anti-Rust Nickel Plating\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eShank Type\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eStandard Round Shank (Fits standard drill chucks)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCooling Requirement\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eStrictly mandatory to add water for cooling while drilling\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is continuous water cooling mandatory for these diamond hole saws?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Industrial diamonds are electroplated onto a steel substrate. Friction from drilling glass or ceramic tiles generates intense localized heat. If water is not continuously applied to cool the bit, the steel crown will expand and release the electroplated diamond particles, ruining the bit in seconds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I keep the hole saw from sliding when I start drilling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Since there is no center pilot pin, start by tilting your drill at a 45-degree angle. Let only one side of the circular diamond edge contact the glass\/tile to grind a small moon-shaped groove. Once this crescent groove is deep enough to act as a guide, slowly pivot the drill back to a 90-degree perpendicular position and continue drilling.\u003c\/p\u003e\n\n\u003c!-- Recommended System Bundles \u0026 Cross-Linking (Strictly 3 Links, Chinese placeholders inside href) --\u003e\n\u003cdiv style=\"background-color: #fcfcfc; border: 1px solid #e5e5e5; padding: 15px; border-radius: 6px; margin-top: 30px;\"\u003e\n  \u003cp style=\"margin: 0 0 10px 0; font-size: 15px; font-weight: bold; color: #333;\"\u003eRecommended System Bundles \u0026amp; Companion Products:\u003c\/p\u003e\n  \u003cul style=\"margin: 0; padding-left: 20px; font-size: 14px; color: #555;\"\u003e\n    \u003cli style=\"margin-bottom: 8px;\"\u003e\n      \u003cstrong\u003eFor Aquarium Tank Overflow Drainage:\u003c\/strong\u003e After drilling clean holes in your glass sump, mount our non-toxic \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/fish-tank-intake-drainage-joints\/products\/tianyan-aquarium-pvc-bulkhead-fitting-fish-tank-inlet-outlet-drain-union-overflow-water-connector-20mm-50mm-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003eTianyan Aquarium PVC Bulkheads\u003c\/a\u003e.\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 8px;\"\u003e\n      \u003cstrong\u003eFor Soft\/Wood Drilling:\u003c\/strong\u003e If you need to drill multiple incremental hole sizes on wood or soft plastics, use our \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/hardware-tools\/products\/hss-4241-high-speed-steel-step-drill-bit-symmetrical-pagoda-cone-drill-for-wood-plastic-thin-metal-sheet-4mm-52mm-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003eHSS-4241 Step Drill Bits\u003c\/a\u003e.\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 0;\"\u003e\n      \u003cstrong\u003eFor On-Site Pipe Fitting:\u003c\/strong\u003e Ensure perfectly clean, square cuts on your plastic tubing networks with our matching \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/hardware-tools\/products\/aubon-professional-pvc-ppr-pipe-cutter-heavy-duty-ratchet-fast-shear-tubing-scissors-0-36mm-0-42mm-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003eAUBON PVC\/PPR Pipe Cutters\u003c\/a\u003e.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Atradesen","offers":[{"title":"6mm","offer_id":56770059763878,"sku":null,"price":1.23,"currency_code":"USD","in_stock":true},{"title":"8mm","offer_id":56770059796646,"sku":null,"price":1.23,"currency_code":"USD","in_stock":true},{"title":"10mm","offer_id":56770059829414,"sku":null,"price":1.65,"currency_code":"USD","in_stock":true},{"title":"12mm","offer_id":56770059862182,"sku":null,"price":1.78,"currency_code":"USD","in_stock":true},{"title":"14mm","offer_id":56770059894950,"sku":null,"price":2.02,"currency_code":"USD","in_stock":true},{"title":"16mm","offer_id":56770059927718,"sku":null,"price":2.63,"currency_code":"USD","in_stock":true},{"title":"20mm","offer_id":56770059960486,"sku":null,"price":2.78,"currency_code":"USD","in_stock":true},{"title":"22mm","offer_id":56770059993254,"sku":null,"price":3.01,"currency_code":"USD","in_stock":true},{"title":"25mm","offer_id":56770060026022,"sku":null,"price":3.32,"currency_code":"USD","in_stock":true},{"title":"28mm","offer_id":56770060058790,"sku":null,"price":3.65,"currency_code":"USD","in_stock":true},{"title":"32mm","offer_id":56770060091558,"sku":null,"price":4.12,"currency_code":"USD","in_stock":true},{"title":"35mm","offer_id":56770060124326,"sku":null,"price":4.69,"currency_code":"USD","in_stock":true},{"title":"40mm","offer_id":56770060157094,"sku":null,"price":5.32,"currency_code":"USD","in_stock":true},{"title":"45mm","offer_id":56770060189862,"sku":null,"price":5.85,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":56770060222630,"sku":null,"price":6.65,"currency_code":"USD","in_stock":true},{"title":"55mm","offer_id":56770060255398,"sku":null,"price":7.32,"currency_code":"USD","in_stock":true},{"title":"60mm","offer_id":56770060288166,"sku":null,"price":7.84,"currency_code":"USD","in_stock":true},{"title":"65mm","offer_id":56770060320934,"sku":null,"price":8.94,"currency_code":"USD","in_stock":true},{"title":"75mm","offer_id":56770060353702,"sku":null,"price":9.89,"currency_code":"USD","in_stock":true},{"title":"90mm","offer_id":56770060386470,"sku":null,"price":12.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/Jungong_Diamond_Coated_Hole_Saw_Bit_Electroplated_Emery_Core_Drill_for_Glass_Tile_Acrylic_Rigid_Plastic_6mm_-_90mm_-_Atradesen-001.png?v=1783780585","url":"https:\/\/atradesen.com\/products\/jungong-diamond-coated-hole-saw-bit-electroplated-emery-core-drill-for-glass-tile-acrylic-rigid-plastic-6mm-90mm-atradesen","provider":"Atradesen","version":"1.0","type":"link"}