{"product_id":"irwin-marples-1-7-8-in-x-4-in-l-carbon-steel-forstner-drill-bit-round-shank","title":"Irwin Marples 1-7\/8 in. X 4 in. L Carbon Steel Forstner Drill Bit Round Shank","description":"\u003cdiv\u003e\n\u003cp\u003eAchieve precision woodwork with the Irwin Marples 1-7\/8 in. x 4 in. L Carbon Steel Forstner Drill Bit with a round shank. Designed for clean, flat-bottom holes in hard and soft woods, this bit delivers dependable performance for cabinetry, furniture making, and detailed joinery projects.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDiameter:\u003c\/b\u003e 1-7\/8 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOverall length:\u003c\/b\u003e 4 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eShank:\u003c\/b\u003e 3\/8 in round shank\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Carbon steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Forstner drill bit\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBrand\/Line:\u003c\/b\u003e Irwin Marples\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePackaging:\u003c\/b\u003e Boxed; 1 piece per package\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this Forstner bit stand out\u003c\/h3\u003e\n\u003cp\u003eForstner bits are prized for creating precise, flat-bottom holes with smooth sidewalls. This Irwin Marples model combines robust carbon steel with a dependable cutting edge to reduce tearing and wandering, giving you cleaner results with every hole. The round 3\/8 in shank fits a wide range of standard drill chucks and drill presses, providing stable, precise guidance even when you’re drilling larger-diameter holes.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHinge mortises and dowel work in cabinetry and furniture projects\u003c\/li\u003e \u003cli\u003eCreating clean recesses for inlays or rounded recesses for electrical pass-throughs\u003c\/li\u003e \u003cli\u003eDrilling wide, flat-bottom holes in softwoods and hardwoods without tearout\u003c\/li\u003e \u003cli\u003eControlled material removal in joinery tasks where square edges are essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow this bit helps you work smarter\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFlat-bottom holes: achieve precise depth for hardware installation, without the need for extra routing steps.\u003c\/li\u003e \u003cli\u003eCleaner edges: the Bit’s geometry minimizes tearout, especially beneficial on plywood veneers and fine hardwoods.\u003c\/li\u003e \u003cli\u003eVersatile mounting: the 3\/8 in round shank works with most standard drills and drill presses, offering reliable compatibility across tools.\u003c\/li\u003e \u003cli\u003eDurable construction: carbon steel delivers steady cutting performance for repetitive woodworking tasks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMark the depth with a stop or tape to prevent over-penetration and ensure consistent holes.\u003c\/li\u003e \u003cli\u003eSecure the workpiece with clamps and feed the bit slowly to maintain control and minimize tearout.\u003c\/li\u003e \u003cli\u003eStart with a pilot guide if drilling through dense lumber to reduce wandering.\u003c\/li\u003e \u003cli\u003eKeep chips cleared during drilling to avoid overheating; consider backing material if drilling near the surface.\u003c\/li\u003e \u003cli\u003eAfter use, wipe the bit and lightly oil before storing in the boxed case to prevent rust on carbon steel.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCare and longevity\u003c\/h3\u003e\n\u003cp\u003eStore this bit in its boxed packaging to protect the cutting edge and maintain alignment. Regular maintenance—removing built-up pitch, keeping it dry, and applying a light coat of oil—helps preserve sharpness and extend the bit’s life for many projects to come.\u003c\/p\u003e \u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cp\u003ePerfect for woodworkers, hobbyists, and professionals who value clean, repeatable holes without extra finishing. If you’re upgrading your workshop with reliable, purpose-built bits for cabinetry, furniture making, or detailed wood joinery, this Irwin Marples Forstner bit is a dependable choice.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Irwin","offers":[{"title":"Default Title","offer_id":52169063727378,"sku":"23439","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/23439_A.eps_High.jpg?v=1775414685","url":"https:\/\/nationalhardwaregroup.com\/products\/irwin-marples-1-7-8-in-x-4-in-l-carbon-steel-forstner-drill-bit-round-shank","provider":"National Hardware Group","version":"1.0","type":"link"}