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Bosch Professional 5-Piece Forstner Drill Bit Set (for Wood, Ø 15/20/25/30/35 mm, Length 90 mm, Drill Accessories)

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The majority of Forstner drill bits are made of High Speed Steel (HSS). HSS drill bits are typically titanium-made drill bits and have a titanium oxide coating. They’re durable, resistant to corrosion, and can drill through wood and steel.

While large collections of budget Forstner bits can sometimes be tempting, many users will never need the majority of those drills. Quality might also be a concern. The Basynol set is ideal for those who want well-made tools that might only be used occasionally, for the woodworker just starting out, or for those who need a particular metric size for cutting hinge holes, for example. One or two manufacturers use High Carbon Steel (HCS). HCS is slightly softer than HSS, though the term “softer” has to be taken into context. These bits are still hard enough to drill into wood and wood-based materials. HCS bits won’t cut aluminum and other soft metals, or tile and masonry. Bit Size & Number of Bits Credit subject to status and affordability. Terms and conditions apply. Axminster Tool Centre Ltd trading as Axminster Tools is a credit broker and is Authorised and Regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority. Financial Services Register no. 704348. Drill bit diameters range from ¼-inch to 2 ⅛-inch. The bits come in a wooden box equipped with a clever tilt-out mechanism which presents them ready for use. Product Specs

Oftentimes, two sets will come with the same minimum of maximum sizes—one may contain eight bits, while the other has 10 or 12. The latter of the two sets will have a greater variety of sizes, thus increasing versatility. However, it’s important to consider quality. While a large number of bits at a low cost might suit the DIY user, this set is unlikely to meet the standards of a professional. Saw-tooth Forstner bits have a series of teeth that resemble a coarse saw blade. These are designed for more aggressive cutting and are particularly good for end grain. The Precision Shear design, which was introduced by Freud has a serrated edge with a steep interior angle that produces a very sharp edge, and rapid, chisel-like cutting action. Material A major advantage of a Forstner bit is that it’s made to drill flat bottom holes. Rather than drilling all the way through, a flat bottom hole has smooth sides, a small pilot point in the center, (and the name suggests) a flat bottom. These are great for dowel joints, or fitting catches in cabinet doors. Unlike a spade or twist drill bit, Forstner bits have no problem cutting at an angle and can drill partial or overlapping holes. The latter makes for fast material removal when cutting mortises, particularly when used in a drill press. Forstner bits are also popular with woodturners, allowing large, deep holes to be cut on a lathe.

At first glance, it’s difficult to differentiate these tools from competitors, but Freud Precision Shear Forstner bits are forged (hammered into shape under high pressure with still molten metal). This makes them very hard, leading to superior edge retention and longer life. BASYNOL also produces a variety of imperial size Forstner drill bits, but not in a set. Product Specs Bosch Professional includes a wide range of high-quality accessories for wood such as machine wood drill bits, carbide hinge cutting bits and tungsten carbide tipped bits. All our drill bits for wood are specially designed to rapidly drill through wood with little force. The bits are made of high-quality steel and feature a precision ground point and cutting edge for clean, fast drilling. The price is almost unbelievably low, but there are reasons for that. Although this set is advertised as “tungsten steel” we believe the bits are HSS. There is no box, which is disappointing but can be easily remedied. Some of the shafts are not perfectly straight, which results in holes that aren’t exactly the right size. However, this will be of little concern to those who buy these Forstner bits for high productivity in hard-working environments. Product Specs

While not cheap, these are a worthwhile investment for both serious DIY enthusiasts and professionals. Product Specs The unusual open tooth blade pattern focuses on fast material removal (because time really is money for a professional) and maintains a good quality finished cut. The reduced shank means they’re designed to fit all pro-grade power drills. Many DIY users will be fine to use HSS bits on their own. However, professionals or individuals who use these tools frequently may want to invest in a carbide Forstner drill bit set. It depends on the kind of hole you want. Spade bits work faster, but the hole is often ragged. They’re often for construction, where pipework needs to go through softwood lumber for example. A Forstner bit is slower but leaves a clean finish. It can make flat-bottomed holes, which a spade bit cannot. Q: Can Forstner bits be used with a hand drill, hammer drill, or impact driver?

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