6/30/2023 0 Comments Metric forstner bitsThey still retain clean cutting characteristics when used drilling across the grain but just not as clean as a true forstner bit - although acceptable for virtually all wood boring. All the bits in the set are true forstner bits up to 22mm, with all bits 25mm and larger having a sawtooth design.Ī sawtooth design makes them able to cut more easily when drilling with the grain (such as through end-grain). We can proudly say that after 30 years, these forstners offer excellent value for money, at a cheaper cost than almost all of our competitors, without sacrificing the quality and genuine reliability that makes a forstner so worth having in the first place. The common issue many people have with forstners is the cost factor - if you're only drilling flat-bottom holes on a semi-regular basis than many people try to avoid the initial outlay. The design permits large chip clearance easily and this combined with their ability to track truly makes them especially suited for drilling deep or extra large diameter holes. Extension bars are available for this purpose. They can be used to be bore in any direction and are extremely useful for boring holes on an angle or to true up and increase the size of an existing hole or timber imperfection. Hence they are not deflected easily by the natural differences in hardness found in timber such as knots or strong grain patterns. Never grind or touch up the outside of the bit.These forstner bits are superior because they come in a common metric size!įorstner bits are superior bits for drilling wood because they are guided by the rim and not a centre-point. The rim needs less frequent sharpening but can be touched up using a round file or diamond stone on the inside. Sharpen by running a small flat diamond plate along the horizontal scraper cutter keeping the angle constant. You can increase this by purchasing the forstner bit extension (sold separately). They still retain clean cutting characteristics when used drilling across the grain, but just not as clean as a true forstner bit - although acceptable for virtually all wood boring.Īll metric forstner and sawtooth bits are 90mm long with a recommended shaft installation into the chuck of 25mm, providing a maximum 65mm depth of cut. A sawtooth design makes them able to cut more easily when drilling with the grain (such as through end-grain). Īll bits 25mm and larger purposefully have a sawtooth design. Also, these bits are ripper value if we do say so ourselves. Simply put, you can trust an Aussie retailer to carefully test and ensure quality in design over cheap foreign knock-offs with little to no quality control, customer support or responsibility. Extension bars are available for this purpose.Especially suited for drilling deep or extra large diameter holes.The design permits large chip clearance easily.Used to true up and increase the size of an existing hole or timber imperfection.They can be used to be bore in any direction and are extremely useful for boring holes on an angle.Hell, when we can't find a good metric version, sometimes we just build it ourselves! What's so good about Forstners?įorstner bits are superior bits for drilling wood because they are guided by the rim and not a centre point. Sick of the woodworking industry's insistence on using imperial, when all you want is a simple, relatable metric measurement? We've got your back here at Timbecon, which is why we stock both metric and imperial versions of every major tool and fitting. Every common forstner bit size in metric measurements.
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