Identify your project requirements: Determine the type and size of hole you need to create.
It’s important to note that as the drill bit size increases, the hole it creates will also be larger. For example, a 1/4-inch drill bit has a diameter of 1/4 inch. The drill bit size refers to the diameter of the bit itself. Drill bit sizes are typically measured in inches, but they can also be measured in millimeters (mm) or fractional inches. 6mm Router Bits (1/4” Shank Approx.Before we dive into the drill bit size chart, it’s crucial to understand how drill bit measurements work. Unlike ¼” and ½” bits, 3/8” router bits have recently been deemed as historical sizes, meaning they’re being used much less frequently. In fact, heavy-duty routers are predominantly supplied with ½” collets. Much like ¼” bits, router bits of ½” are some of the most common solutions on the British market. This is because the majority of light-duty routers are supplied with ¼” collets. ¼” V-Groove Router BitsĪs previously mentioned, ¼” router bits are one of the most common shank diameters in Britain. We show the full dimensions and shank size in the description of every product. For instance, a 2mm cutting diameter two-flute up cut router would be on a 1/8” shank. For sizes 1/8” (3.175mm) and under, most cutting diameters would be on a 1/8” (3.175mm) shank. For example, a 4mm cutter would be on a 4mm shank. For CNC router cutters, most sizes above 1/8” (3.175mm) cutting diameter will be on the same size shank as the cutting diameter. If using a CNC router, then you will be able to get collets for any shank size. Detailed below are some of the other common shank diameters available in the UK. This is one of the most important aspects to consider when selecting your chosen router bit, and two of the most common sizes you’ll encounter on handheld routers are ½-inch and ¼-inch spiral up-cut router bits. Shank Diameterįirst up is the shank diameter, which is measured across the centre of the bit’s shank from any point on the circumference. It’s for this reason that we’ve put together this handy blog to help you sift through the almost unending selection of router bits to find the best one for your project. Even as a tradesperson, navigating the world of router cutters in the UK is by no means straightforward. It’s not just the endless names (engraving router bits, straight flute router bits, router milling bits, spiral router bits, etc.), but it’s also the seemingly never-ending measurements. When it comes to finding router bits in the UK, you’re often presented with a lot of jargon and measurements that may not make immediate sense.
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