Woodcarving is the toughest part of woodworking. It requires master-level skills together with advanced machines and tools to achieve perfection. The combination of skills isn't enough to ace woodcarving, you also need to be equipped with efficient tools like the best CNC router bits in 2021. Because these router bits actually make the magic happen, no woodworker should head to their project without them.
There are a variety of router bits available in the market, but not all can help you produce spellbinding woodwork. If you don't know how to choose the best router bit for your CNC machine, you may end up creating a disaster. There are a ton of problems caused by inaccurate or inefficient router bits. That's why to help you through this we've listed the best router bits produced by top-level manufacturers. So, have a look at the list and buy the one best suited for you.
Choosing the best router bits isn't difficult, but there are a few things to consider before making a purchase. If you're a beginner, you'll probably need a lot of help before purchasing router bits. The general shape, sizes, and purpose of the bits are the most important factors to consider before purchasing a router bit. We have scoured this detailed guide to help you in the selection process.
What are the different types of router bits?
Router bits are designed to create custom moldings in cabinets, other forms of furniture, and other types of trimming work for home accessories. Beads, coves, chamfers, and ogees are just a few of the bits available. When selecting a bit, keep in mind that the bit profile is the polar opposite of the wood profile.
Straights and slotting
It's a common question whether the straight and slotting bits have the same job. Yes, technically, but the processes for both are different. Straight router bits trim in a perpendicular pattern, whereas slotting bits generally cut parallel to the router base. For example, if you're trying to cut a groove in a door rail to make a curved panel, you'll need a slotting bit with a guided bearing.
A slotting bit, on the other hand, will not be able to trim dadoes in order to build shelves in a bookcase, thus a straight bit will be required in that scenario. One of the most crucial tools for a professional craftsman to have is straight and slotting bits.
Joinery parts are some of the best router bits available. These are used to curve fine joinery, which can be accomplished with a router and a precise bit. These are available for box joints, finger joints, and other joints.
These are paired bits that are used to manufacture cabinet doors by cutting mating joints such as stile and rail or tongue and groove profiles. More popular sets of matched bits can be found online. One of the nicest aspects of these fantastic router bits is that they can adapt to the smaller ply of today's times by adjusting to it.
Flush trim and pattern bits
When it comes to production efficiency, CNC router bits are the most effective ones. These enhance production more than all other types of router bits in terms of quantity. Although it seems to be a straight bit at first glance, a flush trim contains a guided bearing at the tool's end. The pattern bit is made out of a shank that contains bearings. In order to make an adequate replica, both router bits usually have a pattern.
What are some common bits of material to choose from?
High-speed steel (HSS)
This is a heat-resistant, wear-resistant, and hardened tool steel bit. It outperforms carbon steel when it comes to cutting tools and drill bits, and it's very useful for cutting foams. HSS is made from raw ore that is heated until it melts, then different elements and minerals are added to improve the internal structure. When compared to carbide, the tool life of HSS is shorter.
Solid carbide (SC) steel
This is a tough, wear-resistant material. SC bits are available in different types, ranging from low-cost to high-quality, high-priced options. If you're looking for SC bits, you need to be especially cautious or you'll end up with a knock-off. Carbide comes in a variety of shapes and sizes (tungsten carbide, beryllium carbide, silicon carbide, etc.). Please keep in mind that some pieces are brittle and should be handled with caution.
Large-diameter CNC router bits feature pieces of carbide brazed to a steel body because carbide is expensive. The durability of carbide is combined with the reduced cost of a steel core.
Solid tungsten carbide bits
Solid tungsten carbide bits are manufactured from strong tungsten carbide particles linked together with metallic cobalt. Because these bits are so tough and long-lasting, they stay sharper for far longer than HSS bits.
Polycrystalline diamond (PCD)
These bits are comprised of diamond particles sintered together with a binder. To make an exceptionally hard and abrasion-resistant bit, the diamond is mixed with a carbide substrate.
What are the major cut types of CNC router bits?
Spiral bits are versatile tools that may be used in a variety of applications, but you must first establish the cut direction, which will be influenced by the material type and other factors.
Chips (and the material) are pulled up by cut-up bits. Your material will need to be properly held down when utilizing them. If you want to clean chips from your cuts and avoid overheating the bits, cut-up bits are the way to go. They're excellent for slicing through the material.
Chips and material are pushed back into the cut using downcutting tools. Their down shear movement is ideal for protecting your material's top surface. These bits are perfect for cutting thin, flexible materials, but they aren't ideal for drilling holes because chips will push the bottom layer of the workpiece away from the bit. The top of the workpiece is cleanly cut using down cut pieces, while the bottom edge may tear.
Up-down bits (compression bits) combine the advantages of both up and down chopped bits. Although the bit is a down cutter, the tip is an up cutter. Because the top is pushed down while the bottom is pulled up, you'll get a clean edge on both sides while cutting materials like plywood. Chipping is eliminated and the risk of harming the workpiece is reduced by combining the two geometries.
The Genmitsu MC40A is a fully loaded router bit set. It includes 40 different router bits for a variety of applications. All router bits are made from highly durable tungsten carbide steel alloy that allows continuous machining up to 800 minutes without temper or diminishing. The titanium coating on the edges adds more to the strength and durability of these bits. Moreover, these top-quality router bits from Genmitsu are highly compatible with most of the CNC router machines. You can easily use these router bits cross-platform as per your convenience.
Built using high-quality steel alloy to ensure durability and effectiveness
Works well with most of the CNC router machines
Comes with a 2-flute flat nose, ball nose, and end mill
Don’t fit perfectly on some routers
Doesn’t come with a proper user guide to accommodate beginners
It is the perfect set of high-quality router bits specifically designed for woodcarving. The set has a total of 4 router bits including, Ball Nose Router Bit, Down-Cut Router Bit, Up-Cut Router Bit, and 90 Degree Chamfer Router Bit. Each of these bits is used for 3D woodwork, edging, cutting, and chamfering or beveling respectively. The router bits in this set are made up of carbide, a very strong and durable material. That’s why you don’t need to worry about durability or reliability after buying this set.
Easy installation and fitting on CNC router machines
Smooth and clean-cutting with accuracy and precision
Wood-carving and engraving are made easy with the FOOS router bit set. It includes 4 essential router bits used for wood-carving and engraving on a variety of materials. It features a profile bit for edging and outlining 15° carving liner for fine lines, and a 60° & 90° V groove. All these router bits are built using solid carbide to offer longevity and durability. The carbide also keeps the edges sharp for a long time. With this router bits set, you can create clean and perfect cuts on every type of wood. So, why don’t you buy it?
Made from high-quality carbide material to ensure clean cuts
The finest edges are sharpened to perfection
Features 15° carving liner for fine lines and details
The NITOMAK CNC Spoilboard Surfacing Router Bits are ingeniously built using high-quality carbide and carbon steel. These bits can be used with a CNC hand-held and table-mounted router for spoil board surfacing. Their fine carbide tip enables you to produce high-quality woodwork without any burr edges. The 3 wings design allows seamless surfacing at a relatively higher speed with the required accuracy and precision. Not only this, but the bits can also be used for a variety of applications alongside spoil board surfacing. If you need a versatile woodworking tool, you should go for this.
Advanced level design for high performance
Effective operation with accuracy and precision
Can be used to flatten large-sized edge boards to go through the planer
Not for heavy-duty work
Must be handled with care for improved performance
The Mcwdoit CNC End Mill Bits Set consists of 40 high-quality router bits used for carving and engraving on various kinds of materials. The 40 bits can be used for a variety of applications with CNC and other machines. These bits are made up of substantial cemented carbide making them fit for heavy-duty operation. The highlighted features of these bits include sharp cutting edge, smooth surface, and accurate design. When using these bits, you can be sure about accuracy and perfection.
Genmitsu manufactures the finest quality router bits that are parallel to none. This set of 10 router bits is best for beginners to moderate users working with CNC machines. It includes all the essential bits required in the usual carving and engraving. All these bits are made up of tungsten carbide steel alloy offering great flexural strength and wear resistance. So, if you want good-quality router bits, the SainSmart Genmitsu router bits set is a great option.
Cutting edge diameter of 0.3 to 3 mm
Made of ultra-fine carbide material for durability and reliability
Very affordable and budget-friendly, contains 10 pcs a set
This router bit is specifically designed for spoil board surfacing. It is built from high-quality steel and has carbide blade tips. The cutting blade with an ingenious and unconventional design enables you to produce the finest cuts. The sharp blade tips seamlessly cut through the spoil board without any temper. It has a shank size of 1/4″ for smaller CNC machines. So, what are you waiting for?
Cut diameter of 1 inch and a cut length of 1/4 inches
Three wings design efficiently make clear and clean cuts
A complete package of durability, affordability, and reliability
Can tumble while working on hard surfaces
CNC Router Bit FAQs
Q: Can you use router bits for CNC?
A: Yes, providing the router bit is capable of removing wood quickly enough in a high-load environment, you can use it for CNC. Furthermore, CNCs perform significantly better and at a faster rate than a person using a hand-held router.
Q: Why do your router bits become so hot?
A: Too high speed generates large chunks, which cause wood-searing heat, which is one of the reasons why a router bit burns. Heat build-up is usually caused by dull and filthy router bits that cut poorly.
Q: What can be cut using a CNC router?
A: A computer numerical control (CNC) router is computer-controlled cutting equipment that uses a hand-held router as a spindle to cut a variety of materials, including wood, composites, aluminum, steel, plastics, glass, and foams.
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