{"product_id":"tapered-reamer-finishing-deburring-tool-drill-expander","title":"Tapered Reamer Finishing Deburring Tool Drill Expander","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eTapered Reamer Finishing \u0026amp; Deburring Tool — Precise Hole Expanding for Metal, Plastic \u0026amp; Wood\u003c\/h2\u003e\n\u003cp\u003eWhen a drilled hole comes out slightly undersized, out-of-round, or leaves a rough burr that catches on fasteners, the right tapered reamer makes the difference between a frustrating rework and a clean, professional result. Machinists, plumbers, electricians, and hands-on DIYers who need repeatable, accurate hole sizing rely on a tapered reamer finishing deburring tool drill expander to bring holes to exact dimension without a drill press or specialty equipment.\u003c\/p\u003e\n\u003cp\u003eThis tapered reamer is constructed from hardened high-speed steel (HSS) with a spiral-fluted body that shaves material progressively as you rotate. Two size ranges are available — 3–13 mm (approx. 1\/8\"–1\/2\") and 5–16 mm (approx. 3\/16\"–5\/8\") — covering the most common hole diameters encountered in sheet metal, copper pipe, PVC conduit, and timber framing. The tapered shank fits standard drill chucks and can also be turned by hand with a tap wrench for controlled, low-speed finishing passes.\u003c\/p\u003e\n\u003cp\u003eTypical applications include enlarging pilot holes in electrical junction boxes for conduit knock-outs, deburring copper tube ends before soldering, cleaning up punched holes in sheet steel for bolt clearance, and chamfering plastic enclosure holes for cable glands. The progressive taper lets you stop at any diameter within the range, making this tool equally useful for sizing a single hole or batch-processing a run of identical parts.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard 3-jaw drill chucks (3–16 mm capacity) and tap wrenches. Suitable for hand-held drills, drill presses, and manual rotation. Works on mild steel, aluminum, copper, brass, PVC, ABS, and softwood up to approximately 10 mm thick.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Tapered Reamer Finishing Deburring Tool Drill Expanders\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eTwo Practical Size Ranges\u003c\/strong\u003e\n\u003cp\u003eChoose 3–13 mm or 5–16 mm to match your most common hole diameters. Each reamer covers the full range continuously — stop at any point for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eHardened HSS Construction\u003c\/strong\u003e\n\u003cp\u003eThe fluted body is machined from hardened high-speed steel, maintaining a sharp cutting edge through repeated use on steel, copper, aluminum, and plastic without chipping or dulling prematurely.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\n\u003cstrong\u003eSpiral Flute Design for Clean Cuts\u003c\/strong\u003e\n\u003cp\u003eSpiral flutes pull chips away from the cutting zone as you advance, reducing heat build-up and leaving a smooth bore wall that requires no secondary finishing in most applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n\u003cstrong\u003eProgressive Taper — Stop at Any Diameter\u003c\/strong\u003e\n\u003cp\u003eThe continuous taper lets you advance incrementally and test-fit a fastener or fitting at any point, giving you tactile control that a step drill cannot match for precision sizing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eDual-Mode Operation\u003c\/strong\u003e\n\u003cp\u003eThe tapered shank seats securely in a standard drill chuck for powered operation or in a tap wrench for slow, controlled hand reaming — useful when working near finished surfaces or in confined spaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eMulti-Pack Options Available\u003c\/strong\u003e\n\u003cp\u003eAvailable in quantities of 1, 2, 3, or 5 per order. Stock multiple sizes or keep spares on hand for workshop, job-site, or maintenance kit use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Tapered Reamer Drill Expander\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTool Type\u003c\/th\u003e\n\u003ctd\u003eTapered Reamer \/ Deburring Drill Expander\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range (Option A)\u003c\/th\u003e\n\u003ctd\u003e3–13 mm (approx. 1\/8\"–1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range (Option B)\u003c\/th\u003e\n\u003ctd\u003e5–16 mm (approx. 3\/16\"–5\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlade \/ Flute Type\u003c\/th\u003e\n\u003ctd\u003eSpiral fluted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHardened High-Speed Steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Type\u003c\/th\u003e\n\u003ctd\u003eTapered round shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChuck Compatibility\u003c\/th\u003e\n\u003ctd\u003eStandard 3-jaw drill chuck; tap wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Materials\u003c\/th\u003e\n\u003ctd\u003eMild steel, aluminum, copper, brass, PVC, ABS, softwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperation Mode\u003c\/th\u003e\n\u003ctd\u003ePowered drill or manual (tap wrench)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per unit)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich size range should I choose — 3–13 mm or 5–16 mm?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eChoose based on the largest hole you need to ream. If your holes fall between 3 mm and 13 mm (roughly 1\/8\" to 1\/2\"), the 3–13 mm reamer covers the full range. If you regularly work with larger holes up to 16 mm (about 5\/8\"), select the 5–16 mm version. For workshops that handle both ranges, ordering one of each is the most practical approach.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this reamer be used on stainless steel or hardened steel?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis reamer is designed for mild steel, aluminum, copper, brass, and similar non-hardened metals, as well as plastics and softwood. Stainless steel and hardened steel are significantly harder and will dull the cutting edges faster than intended. For stainless, use cutting fluid and slow speeds; for hardened steel, a carbide-tipped reamer is the appropriate tool.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the reamer work with a standard cordless drill?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The tapered shank fits any standard 3-jaw drill chuck with a capacity of at least 3 mm (1\/8\"). Use a low speed setting (typically under 500 RPM for metal) and apply light, steady forward pressure. For plastic and wood, higher speeds are acceptable. The reamer can also be turned by hand using a tap wrench for precise, controlled finishing passes.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I avoid removing too much material?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe progressive taper is your built-in control mechanism — advance slowly and test-fit your fastener or fitting frequently. Mark the target diameter on the reamer with a marker or tape as a visual stop point. Working at low speed and checking fit every few rotations prevents oversizing. Once the correct diameter is reached, withdraw the reamer without reversing rotation to avoid scratching the bore wall.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this tool suitable for deburring punched sheet metal holes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — deburring is one of the primary use cases. Insert the tip into the punched hole and rotate a few turns to shave the raised burr flush with the sheet surface. The spiral flutes clear the metal shavings efficiently. This is particularly useful when preparing sheet metal panels for cable glands, conduit fittings, or bolt clearance holes where a sharp burr would damage insulation or prevent a flush fit.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow should I maintain and store the reamer to extend its service life?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAfter each use, wipe the flutes clean with a dry cloth or brush to remove metal chips and debris. Apply a light coat of machine oil or cutting fluid to the fluted surface before storage to prevent surface oxidation. Store the reamer in a protective sleeve, roll, or separate compartment to prevent the cutting edges from contacting other tools. Avoid dropping the tool on hard surfaces, as the hardened steel can chip at the tip if impacted.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this reamer on copper pipe for plumbing work?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Copper is a soft, machinable metal that responds well to HSS reamers. This tool is commonly used to clean up the cut end of copper tube, remove burrs from the bore after cutting with a pipe cutter, and slightly enlarge the opening for a push-fit or compression fitting. Use light pressure and slow speed to avoid work-hardening the copper or generating excessive heat near solder joints.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Size and Quantity above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which size range should I choose — 3–13 mm or 5–16 mm?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Choose based on the largest hole you need to ream. If your holes fall between 3 mm and 13 mm (roughly 1\/8\\\" to 1\/2\\\"), the 3–13 mm reamer covers the full range. If you regularly work with larger holes up to 16 mm (about 5\/8\\\"), select the 5–16 mm version.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this reamer be used on stainless steel or hardened steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This reamer is designed for mild steel, aluminum, copper, brass, and similar non-hardened metals, as well as plastics and softwood. For stainless steel, use cutting fluid and slow speeds; for hardened steel, a carbide-tipped reamer is the appropriate tool.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the reamer work with a standard cordless drill?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The tapered shank fits any standard 3-jaw drill chuck with a capacity of at least 3 mm. Use a low speed setting (typically under 500 RPM for metal) and apply light, steady forward pressure. It can also be turned by hand using a tap wrench.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I avoid removing too much material?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Advance slowly and test-fit your fastener or fitting frequently. Mark the target diameter on the reamer as a visual stop point. Work at low speed and check fit every few rotations to prevent oversizing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tool suitable for deburring punched sheet metal holes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — insert the tip into the punched hole and rotate a few turns to shave the raised burr flush with the sheet surface. The spiral flutes clear metal shavings efficiently, making it ideal for cable glands, conduit fittings, or bolt clearance holes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How should I maintain and store the reamer to extend its service life?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"After each use, wipe the flutes clean and apply a light coat of machine oil before storage. Store in a protective sleeve to prevent cutting edges from contacting other tools. Avoid dropping the tool as the hardened steel tip can chip on impact.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this reamer on copper pipe for plumbing work?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. This tool is commonly used to clean up cut copper tube ends, remove burrs from the bore, and slightly enlarge the opening for push-fit or compression fittings. Use light pressure and slow speed to avoid work-hardening the copper.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"5-16mm \/ 1","offer_id":52378263748882,"sku":"GLFBLFFGLOZON0076x1","price":12.73,"currency_code":"USD","in_stock":true},{"title":"3-13mm \/ 1","offer_id":52378263781650,"sku":"GLFBLFFGLOZON0077x1","price":12.66,"currency_code":"USD","in_stock":true},{"title":"5-16mm \/ 2","offer_id":52378263814418,"sku":"GLFBLFFGLOZON0076x2","price":23.16,"currency_code":"USD","in_stock":true},{"title":"3-13mm \/ 2","offer_id":52378263847186,"sku":"GLFBLFFGLOZON0077x2","price":23.02,"currency_code":"USD","in_stock":true},{"title":"5-16mm \/ 3","offer_id":52378263879954,"sku":"GLFBLFFGLOZON0076x3","price":33.58,"currency_code":"USD","in_stock":true},{"title":"3-13mm \/ 3","offer_id":52378263912722,"sku":"GLFBLFFGLOZON0077x3","price":33.36,"currency_code":"USD","in_stock":true},{"title":"5-16mm \/ 5","offer_id":52378263945490,"sku":"GLFBLFFGLOZON0076x5","price":54.41,"currency_code":"USD","in_stock":true},{"title":"3-13mm \/ 5","offer_id":52378263978258,"sku":"GLFBLFFGLOZON0077x5","price":54.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-07_7d6ce133-80cd-45e8-bce7-4db89d2f852f.jpg?v=1781874563","url":"https:\/\/homediyer.com\/products\/tapered-reamer-finishing-deburring-tool-drill-expander","provider":"HomeDIYer","version":"1.0","type":"link"}