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upcut-spiral-router-bit-pay Log In. It wants to pick up the work. And those bearings can uocut mounted on the tip of the cutter or on upcut spiral router bit pay shank of the cutter, depending on your needs and your template. A down-cut bit will leave a clean edge on top but a ragged edge on the bottom; an up-cut bit will accomplish the opposite. The new solid-carbide spiral bits come with some disadvantages.

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.

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Friends of Woodcraft. Getting Started with Woodworking. Make Something. Pen Kit Reference Chart. Press Releases. Resin Casting. Shop Talk. Woodcraft Magazine. Woodworking Adventures. Spiral Router Bits vs. Spiral Bits Leave a Clean Edge The three basic cutter configurations Upcut Spiral Router Bit Kernel for spiral bits are up-cut, down-cut, and a combination of the two, known as a compression bit.

Straight Bits Come in Many Sizes and Bearing Configurations Router-bit manufacturers have difficulty making solid-carbide spiral bits with cutting diameters larger than their shanks. Sharpening Spiral Bits For Router 5g Spiral Bits Is Difficult, if Not Impossible 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.

Spiral Bits Can Be Risky to Use Spiral bits work incredibly well in the production environment and especially in CNC computer numerically controlled router industrial applications. Quick View Item 03K Uncut spiral. Do you sell this size? Check out this bit. It should work for you. Account Login Register My Cart 0. Login Register Search. Where are these bits made? Is triple flute preferred on a 2. Customer Reviews Based on 21 reviews Write a review.

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