Topics Cabinetry. Choosing Hardware. Two flutes ground around the body of a spiral bit spiral down cut router bit 8bit vibration by spreading the cutting action Spiral Down Cut Router Bit Youtube over a longer edge. Search Go. Chuck a straight bit into your drill press and plunge it into a piece of wood. You can make this cut, but you have to take it slower than usual to give the chips a chance to clear. Talk to an Expert Get advice on the latest products and help with your projects.

Router-bit manufacturers have difficulty making solid-carbide spiral bits with cutting diameters larger than their shanks. Straight bits, on the other hand, go through dozens of fractional sizes, all the way up to 2-in.

Depending on the job you have in mind for your router bit, straight bits also come in a variety of cutter lengths. So you can buy close to exactly the length of cutter you need.

Straight bits also have a huge advantage over spiral bits when it comes to template routing, because you can buy them with guide bearings. And those bearings can be mounted on the tip of the cutter or on Spiral Down Cut Router Bit Values the shank of the cutter, depending on your needs and your template.

The bearings are made for a variety of cutter diameters and lengths. With their superior edge cut, spirals make great template cutters Spiral Down Cut Router Bit Notes when used with collar guides. But when it comes to bearing-guided bits, spirals seem to be available only with bearings mounted on the end of the bit. Shank-shod, bearing-guided, solid-carbide bits spiral bits with Spiral Down Cut Router Bit 2019 the bearings on the shaft end of the bit , which would permit template routing with the template on top of the work and trim cutting through only part of the work face, are not available.

Some woodworkers like to sharpen their straight bits, although I find it difficult to get it right and always send out my bits for sharpening. Carbide-tipped straight bits usually have enough carbide thickness to be reground four or five times, and the tech- nology to do so is common.

A few services claim to be able to sharpen spiral bits. To me, this translates into a substantial loss. Spiral bits might stay sharp longer than straight bits, but even so, the cost of using spiral bits will always be higher.

Spiral bits work incredibly well in the production environment and especially in CNC computer numerically controlled router industrial applications. But in a hand router, their use sometimes imposes unusual risks not associated with the equivalent or bigger straight bits. The down-cut spiral bit's screw-driven forces are sufficient enough to pick the router up and twist it out of your hands—with no warning.

I know, because it has happened to me. On end grain the spiral bit is getting even more traction, so the risk is even greater—a pity, too, because a sweet end-grain finish is attractive.

The up-cut spiral bit can have the opposite effect. It wants to pick up the work. So you must secure the work in some kind of fixture or hold it by a clamp.

I never rout anything that is not secured or clamped, but some people do. I do keep a few solid-carbide spiral bits because, when I want a beautiful face cut or I am cutting narrow mortises, and I have the money, there is just nothing better.

But my cabinet is mostly full of a wide variety of straight bits. For general-purpose work, for template and pattern routing, and for those times when need a large-diameter bit, I still reach for one of my straight bits.

Quick View. Add to Cart. You must be logged in to write a comment. Log In. Spiral router bits for routing plywood, MDF, particle board, laminates, softwood, hardwood and even insulation sheeting. Hercules Max. Life Spirals for high wear applications like laminated boards. Also, when using a bearing guided bit and template on the router table I'll use a downcut with the bearing on the bottom of the bit which is probably the most frequent application I find for these bits.

The template serves as a support to eliminate tearout on that side of the work piece. ElectricFeet Posts: So while for freehand an upcut will send dust upwards towards your dust collection, it will send the dust under the table when mounted on a table. You might also want to look at compression bits, which have both upward and downward spirals. You have to be careful about getting the heights right so that both spirals can engage on the edges.

In theory I have no experience on this both edges come out clean. I watched them all the other day — very useful before buying. Cheese Posts: Here's an example of a dado in maple ply using a Whiteside downcut spiral bit. This dado was made in a single pass. Quote from: Cheese on August 13, , PM. Mario Turcot Posts: Have you also consider Spiral Compression Bits?

More expensive but they are worth the price. Solid carbide compression spiral bits designed for CNC applications requiring high feed rates and a clean finish.

Special unique carbide for longer lifetime in abrasive material. Designed for CNC applications requiring high feed rates and a clean finish. Particularly suitable for double sided melamine or laminated material. To me this is the best type of bit when it comes to do hand free pockets.

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