Top 8 Best 4 Inch Forstner Bit

Top QualityMade from high quality Tungsten Carbide Tipped Cutters, solid hardened steel body, ensuring its high hardness, rust proof, sturdy and durable. SizeDrilling diameter 4Inch , Hex Shank Dia. 25Inch10mm , Drilling depth 2-38Inch60mm, Total length 3-916Inch 90mm.. Sharp Clean HolesThis TCT Tungsten Carbide Tipped CuttersForstner bit set perfect for hard wood, can drill precise flat bottom holes with no chipping in Hard Wood or soft wood.drilling depth up to 2-38Inch. Widely ApplicationsCan be used for drilling holes on on wood and plastic products, furniture, door hinge, desk. Used on cutting wood, plywood, solid wood boards, MDF, plastics, etc.. Warm TipsSince we are all large-size Forstner Drill bit, it is best to use machines with good fixing performance for drilling operations, such as drilling machines, bench drills, vertical drilling machines and vertical electric drills, etc., if you must To operate with a hand electric drill, it is best to use it together with a vise with good fixing effect..

Made in China. Package height 17.4 cm. Package length 11.0 cm. Package width 15.2 cm.

Extends any Forstner shank bit an additional 4 inches, Swift Bore Registered Trademark. Ideal for use with any 38 shank bit. High-carbon steel construction, precision ground and polished. Two set screws and hex key included. To fasten the shank in place, use the hex key to tighten these screws. Shank 38-inch, length 4-inch.

A centering point for accurate drilling. Two circumferential cutters for splinter-free cutting. Two main cutting edges. The toothed cutting edge allows higher speed and therefore faster working. Application Softwood, hardwood.

Designed for use with WoodRiver forstner bits only. Extension adds 4 to length of forstner bit. Socket accepts forstner bits with 12 diameter shanks. Forstner bit held in extension socket with two set screws - 12 diameter drive shank allows use of multiple extensions. WoodRiver is proudly made by Woodcraft, Americas leading supplier of saws, planes, power tools, hand tools, wood stain and paint, routers, sanding, wood, kits, dust collection and more. Our award winning family of brands includes WoodRiver, Highpoint, Woodcraft and Woodcraft Magazine as well as the greatest selection of woodworking books, videos, and plans..

4-58-Inch Diameter. 12-Inch hex shank. Adjustable tapered screw tip. Black oxide finish.

Drilling with forstner bits to achieve a flat bottom hole or to start a deep hole turning project like on a larger vase or vessel is essentially impossible with a standard length forstner bit. To remedy this issue we have developed a heavy duty steel extension that allows you to secure a 38 inch shank forstner bit into the end collet.. The forstner bit extension gives you additional 5-58 inches of reach to bore deeper into your projects. This will help you create larger diameter starter holes or help when you need to drill in just a little further than the standard bit length will allow. The extension can be used with forstner bits on drill presses, lathes with a drill chuck installed drill chuck not included or with a power drill.. One of the most common uses for the forstner bit extension is for woodturners who need to bore out starter holes on larger vessels. However, the extension works exceptionally well for projects like salt shakers, pepper mills or even wood turned beverage mugs. Contractors use the extension when they need to bore deep holes for running cables or wires and they also use it for joining larger timbers.. The forstner bit extender is made from solid, heavy duty machined steel. It is designed to be used with forstner bits only. The collet inside diameter is 38 inch. This tolerance is very tight and designed to accept forstner bits with shank sizes of 38 inch or slightly smaller. Please note that some forstner bit manufacturers produce bits that say 38 inch shank size when in fact they are not. If you measure your bit shank and it is 38 inch, your bit should fit once the set screws are loosened. The collet outside diameter is 2532 inch without the set screws protruding outward. The reason this is important is that as we mentioned earlier, some bits may have slightly different shank sizes. This means the set screws may protrude outwardly from the collet. The minimum size hole this extension will allow you to drill is 1316 inch. Forstner bits and Machinery shown in pictures are NOT included..

This carbide forstner bit has a 3-12 cutting diameter and a 10mm shank compatible with all standard drill and drill press chucks.. Drill clean and accurate holes in solid wood, plywood and MDF. Constructed with carbide tips for quality and longevity. The 10mm shank is compatible with all standard drill and drill press chucks. Hardened steel body for increased rigidity.

Ideal bits for drilling in plywood, hard wood, and soft wood with handheld drills and drill presses. Drill flat bottom holes, pocket holes, and overlapping holes. Wood case for easy storage and protection. 14-to-2-18-inch bits in 18-inch increments. 1-year limited manufacturer's warranty.

Specs Diameter 14 to 2-18, Length 3-12, Rotation RH, Shank 14 to 38. Razor-sharp serrated edges give smooth and flat-bottom holes.. Quality Forged Construction for extended life. Ultra Sharp Spur to ensure an accurate starting hole. Steep Angled Cutting Edges produce holes that are smooth and flat, and create chisel-like curls for fast, clean chip removal.. Freud's Limited Lifetime Guarantee.