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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Although HSS for overall construction is common, Diablo Forstner bits are machined with greater accuracy than many competitors. The central spur has a fine point to ensure precise initial positioning and honed cutting edges provide rapid material removal. Consumers should exercise extreme caution when operating a power drill, as these bits are sharp and could potentially cut one’s finger. 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 The 16-piece set comes in sizes from ¼-inch to 2 ⅛-inch bits and the quality is such that they will most likely appeal to fine furniture makers and other woodworking professionals. Product Specs 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.

While available singly, Forstner bits are usually sold as boxed collections of eight or more. The best Forstner bit sets offer tremendous flexibility, great versatility, and excellent value. 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 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.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. 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

While ordinary drill bits are quite efficient, their cutting action can create ragged holes, particularly when working with larger sizes. You could use a spade bit, but they often vibrate or “chatter” and can be difficult to control.

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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. 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?

Contractors and tradespeople who are regularly employed on new builds or remodeling projects need tools that combine high performance with great value. This Porter-Cable Forstner bit set meets those demands and more.

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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 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. My own experience with Forstner bits is extensive. I was the owner of a woodshop for 11 years; I’ve also renovated two homes. I use Forstner bits for precision furniture-making as well as for punching holes through support beams in preparation for cabling. Some of the best Forstner bits cut like fine chisels, but sometimes speed is more desirable than great accuracy. Durability, edge retention, and price also play a part. In my opinion, the wide range of Forstner bit sets listed above provides a solution for (almost) every demand. FAQs