![]() ![]() It’s a bit of an investment but it is worth every penny. Its got four cutting edges and its what as known as an “insert” bit meaning the blades can be removed to be resharpened or replaced. I recently upgraded to a 2 1/2″ bit and I love it. These bits are made to skim the surface and leave a smooth flat finish. If you are flattening large boards or you are responsible for maintaining the spoil board on your CNC router, you’ll want to have a spoil board cutter or flycutter bit. The most common and useful angles in order are 60deg, 90deg, and 30deg. They are available in many sizes and angles. This is the only way to get a sharp grooved bottom on the inside of those roman numerals for your sundial. These are sometimes called v-carving bits, v-groove bits, or engraving bits. If you want to do lettering or detailed sign making, you’ll need to get a v bit. The slight angle of the cutting edge helps reduce the appearance of tool marks parallel to your material surface. I used a 1/2″ ballnose bit to carve a wooden sink.įor intricate 3d carving, consider a tapered ball nose bit like these. You can carve with just the tip to get great detail and smooth contours or they can move a lot of material just like an end mill. 1/4″ and 1/2″ 2-flute upcut square endmillsĪre you carving large 3D contours or carvings ? You’ll want a ball nose bit that is appropriately sized for the level of detail in your model. Ballnose (aka contouring) bits are fantastic for 3d carving (think topographical maps and the grape relief on the sign at the wine shop). Here are a few key features to consider.Ĭhoose the bit shape suited for your projectĪre you making straight cuts in plywood? Get yourself a good quality spiral cutting endmill. End mills come in many different diameters. There are a lot of variables to consider when looking for the best bit for you and your project. ![]() A basic collection of CNC router bitsĬhoosing bits to use for your CNC router can be confusing. They come with cutting edges that pull up or push down (sometimes both), they have square or shaped ends, they are made for speed or accuracy, and they come in diameters from a pinpoint to over two inches for standard CNC routing. They determine the kind of carving you can do, the resolution of your finished designs, and how fast you can move through the material. ![]()
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