Then there’s chip load, which refers to the size of the pieces of material a bit removes from a workpiece with each revolution. Speed rate is the speed of the spindle and is measured in revolutions per minute (RPM). The former is how fast a bit moves laterally through a material and is typically measured in inches per minute or feet per minute. There are a few different terms you should familiarize yourself with to help you navigate the CNC router bit market – let’s take a look: Feed & speed ratesįirstly there’s feed rate and speed rate. This is the bit you’ll need if you’re carving and engraving. Drilling bits drive directly into the material to make holes, whereas milling bits cut laterally to remove material from the surface of a workpiece rather than going right through it. There are loads of different types of bits for different projects, but they can be broadly distinguished into two categories – drilling bits and milling bits. If you’re not using the right bit, chances are you’re not going to get the end result you’re after. So a bit determines everything from the depth of the cut and the quality of the cut to the type of material you can engrave. What are CNC Router Bits?Ī CNC router bit is the tool that’s used to remove material from the workpiece. We’ll then take a look at some of the best CNC router bits for wood and other materials, so you can get started right away. In this expert guide, we cover everything you need to know about CNC router bits, including how they work, the different types, and what type of job each is best for. However, bits come in a wide variety of different shapes and sizes, and there’s a lot of things you need to consider when choosing a bit for a particular project, so looking to buy CNC router bits can be tricky for beginners. A bit is one of the most important parts of a CNC router, determining what materials you can work on and how accurate your cuts are.

Router bits