Spiral router bits are made of solid carbide using the technology of metalworking industry. As a result, the spiral bit is incredibly sharp and swiftly cut through soft or hardwood, plywood, particle board or other composites boards. Spiral bits are similar to drill bits and are a great tool for plunge-cutting. Those spiral router bits use micro-grain carbide have optimal helix design.  There are two popular spiral router bits; up cute and down cut. Each spiral bit has different performance quality that depends on the cutting and finishing you want. Choosing the right one between two cut router bits is pretty much depressing if you don’t understand the design. Without looking closely to the router bits, you can’t differentiate the up cute spiral bit from the down cut spiral bit. Get the best deal Colonial Baseboard Router Bit Java for Spiral Router Bits from the largest online Up Down Spiral Router Bits Youtube selection at www.- | Browse our daily deals for even more savings! | Free shipping on many items!  Whiteside RU Up Cut Spiral Router Bit for Woodworking - 1/2"SH, 1/4"CD, 1"CL. Whiteside Router Bits RU Standard Spiral Bit with Up Cut Solid Carbide 1/2-Inch Cutting Diameter and /2-Inch Cutting Length. out of 5 stars $$ When the router is oriented with the bit up, as when mounted in a router table, the side of the bit closest to the operator is turning left to right and the back side right to left. It was basically a downcut edge with an upcut spiral going over it. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". With their drill-like point, spiral bits are also better for plunge-cutting. Connect and share knowledge within a single location that is structured and easy to search. You can make this cut, but you have to take it slower than router up spiral bit year to router up spiral bit year the chips a chance to clear.

Turning perfectly good lumber into scrap and sawdust for more than 20 years! Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual.

Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material.

Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice. You likely want an upcut bit. It will pull the chips up towards the router, which gives you better control in both handheld and table routing situations.

Birdhunter Posts: Woodworker, Sportsman, Retired. I agree with the above unless I am routing plywood. The upcut bits can lift the top layer up Roseland Posts: I only ever use upcut or straight. Upcut clear the dust out of a cut quicker, so I prefer them when routing solid wood. But like the other post says, they can delaminate ply, so then I use straight cutters or go very gently. Dick Mahany Posts: This video does a nice job of explaining the benefits of different spiral bits.

RKA Posts: It depends on what you're doing. If you look here you can see some of these bits scroll to near the bottom and look at the "Tornado" cutter. They're pretty advanced and not cheap, but if you're looking to do CNC routing of melamine-faced or ply boards at blistering speeds, then that's what you'll need.

A bit outside the realms of what's used in the home-shop though! The advantage of spiral router bits is that you do not "hammer" a blade into the grain and pull it out again all the time, tearing and pulling wood out.

Instead, the router bit cuts very continually without going "in and out" of the grain, much like a blade that you pull smoothly through the material.

You work with very little vibrations and get a very clean cut. Also you can "plunge" nicely. Lastly, the spiral transports the wood shavings away the "right" or "upcut" spiral, anyway , further increasing precision, and also reducing friction and burn. Using a "upcut" spiral, you get more shavings in front of your vacuum's muzzle, and less in other places. Using a "left" or "downcut" spiral, you can do a pulling cut, which is said to yield an extremely accurate upper edge but I haven't tried that one, I prefer the "upcut" spiral's ability to transport away the shavings.

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Asked 5 years, 11 months ago. Active 5 years, 11 months ago. Viewed 9k times. Straight-cut router bits come with blades with three broad shapes: straight, down-spiral, and up-spiral from left to right, straight blade, down-spiral blade, and up spiral blade, from amazon.

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Though the flutes run in opposite directions, telling an up cut from a down cut bit can be difficult if you cannot imagine their rotation in the router. Though a router always turns in the same direction, from the operators perspective, that rotation appears to reverse depending on if the router is bit down in the common hand-held mode or bit up, as when mounted in a router table.

With the bit down, the rotation is clockwise. That means the side of the bit farthest from the operator is turning left to right, the near side right to left. This Best Wood Router Bit Set 500 is very important for feed direction, as we always want the cutting edges turning against the feed direction, not with it. When the router is oriented with the bit up, as when mounted in a router table, the side of the bit closest to the operator is turning left to right and the back side right to left.

Because the wood is fed against the rotation of the cutting edges, we almost always work against the front side of the bit. If the wood is fed into a router bit on the wrong side, the feed direction matches the bits rotation, making a dangerous kick out all but certain.

Feeding the wood with rather than against bit rotation allows the cutting edges to become highly efficient feed dogs that grab the wood, accelerate it and shoot it off the table at dangerous speeds. Up cut bits are very efficient at evacuating chips from the hole or slot it is cutting.

Deep holes or grooves still have to be cut using multiple light cuts, but the upward direction of the flutes while rotating prevent the debris from building up in the hole and binding or even breaking the bit. The problem with up cut bits is that the same action of the flutes that brings the chips up can also lift or fray the wood fibers around the edges of the cut.

While this damage is usually minor, especially with good quality bits, it can be noticeable if those edges will be visible when the project is assembled. Up cut bits are frequently used for cutting mortises because of their depth.

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