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  • CMT 191.008.11 Solid Carbide Upcut Spiral Bit, 1/4-Inch Diameter by 2-1/2-Inch Length, 1/4-Inch Shank
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CMT 191.008.11 Solid Carbide Upcut Spiral Bit, 1/4-Inch Diameter by 2-1/2-Inch Length, 1/4-Inch Shank

by C.M.T.
42 customer reviews

List Price: $27.65
Price: $18.83 & FREE Shipping on orders over $35. Details
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  • 1-Inch Cutting Length, 2 Cutting Edges, Right-Hand Rotation
  • Premium Quality Solid Carbide, Excellent finish on the workpiece lower side Upward chip ejection
  • For cutting, copying, sizing and routing wood products, plastic & laminates
  • For use on machining centers, point to point machines, CNC routers
  • Also for use on hand-held routers equipped with chucks or adaptors
See more product details
5 new from $17.11 3 used from $13.50

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Frequently Bought Together

CMT 191.008.11 Solid Carbide Upcut Spiral Bit, 1/4-Inch Diameter by 2-1/2-Inch Length, 1/4-Inch Shank + CMT 191.001.11 Solid Carbide Upcut Spiral Bit, 1/8-Inch Diameter by 2-Inch Length, 1/4-Inch Shank + CMT 191.005.11 Solid Carbide Upcut Spiral Bit, 3/16-Inch Diameter by 2-Inch Length, 1/4-Inch Shank
Price for all three: $55.25

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Product Description

Product Description

Sharp technology with a new twist! This upcut spiral bit is made of a special super-micrograin carbide formula which makes the cutting edges very sharp. The new low-angle spiral is designed to shear wood cleanly and provide excellent chip ejection. As a result, the tool will run cooler and the cutting edges will last longer The spiral bit produces an excellent finish on both the lower side of your workpiece. Excellent cutting results and enhanced productivity.

From the Manufacturer

Our new high performance solid carbide spirals are engineered for faster feed rates and long cutting life. New super micrograin carbide formula offers extremely sharp and longer lasting cutting edges. Low helical grind shears material with more efficient chip ejection. The tool works less, runs cooler and out performs the competition. Our new precision machinery was designed and built to CMT spec's. We now manufacture solid carbide spirals with the tightest tolerances in the industry. You won't find a better performance in tooling.


Product Information

Technical Details
Part Number 191.008.11
Item Weight1.6 ounces
Product Dimensions2 x 0.2 x 0.2 inches
Item model number191.008.11
ColorSilver
MaterialCarbide
Item Package Quantity1
Measurement SystemInch
Batteries Required?No
Warranty DescriptionCMT carbide and carbide-tipped router bits and saw blades are designed, engineered and manufactured to uncomprimising standards for optimum cutting performance and maximum service life. If for any reason you are not satisfied with the performance of your CMT router bits, and the bits were used for their recommended applications, you can return them to CMT for a full replacement. Warranty excludes dull, misused, damaged, and/or resharpened bits. CMT is not liable for damages to goods, property or persons, due to improper installation or misapplication of equipment.
  
Additional Information
ASINB000P4HOEQ
Best Sellers Rank #37,837 in Home Improvement (See top 100)
Shipping Weight1.6 ounces (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First AvailableOctober 26, 2006
  
Warranty & Support

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

8 of 8 people found the following review helpful By J. Brooks VINE VOICE on December 15, 2009
Verified Purchase
I do a lot of woodworking, some for pleasure, some for business. After about a year of using old and inferior bits (hand me downs from my Dad) I broke down and bought a handful of these bits when they were on sale for $10 thinking that they'd last a little while and for the price I could just toss them... how wrong I was. Not only do they produce the best cuts in all wood types (soft, hard, and composites) they last way longer then I ever expected, in fact I still have the first one I bought well over two and a half years ago and it still cuts great (remember to keep your bits properly maintained!).

Now the nice thing specific to this bit is that it's an upcut spiral so it directed the chips up and out of the material you are routing. For me, I have my router mounted in a table, so with this bit the chips are directed downward thus keeping my work top/table practically chip free.

Just from the fantastic experience I had from this one CMT bit I have since purchased several hundred dollars worth of CMT bits and not a single one has disappointed.

Thousands of feet worth of material cut/shaped and counting...
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6 of 6 people found the following review helpful By R. Russell on September 14, 2010
Verified Purchase
I own a variety of router bits from different mfrs: Whiteside, Freud, Porter-Cable, MCLS and CMT.
Whenever I need to use one of the CMT bits, the cut always feels smoother and the cut seems cleaner than when I use the other makers bits. I have no empirical data to support this, it is just my experience. They are a pleasure to use.
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4 of 4 people found the following review helpful By treybert on October 30, 2013
Verified Purchase
I own around 4 of these bits, primarily as backups. I use it on a large 4x8 CNC bed and this bit (1/4" diameter, amazon gets confused) and it is my goto bit for cutting profiles from plastic and wood.

I have had one break, but mostly that is because the shank is not firmly in the collet. The shank length is a little short, so I can see it being possible to not have it tightened securely. Combine that with a feed rate that is a little too fast and you increase the chance for breakage.

The folks at CMT our very helpful too. If you ever need advice on speed and feed, they can help you out in a jiffy.

I have used it to cut:
MDF
HDPE
Lexan
PVC
Poplar
Red Oak
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3 of 3 people found the following review helpful By KSquared on June 27, 2013
Verified Purchase
The CMT 191.008.11 Upcut Spiral Bit is 1/4" in diameter not 3/16" as described. The correct number for a 3/16" bit is 191.005.11.
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2 of 2 people found the following review helpful By James S. on March 11, 2014
Verified Purchase
I'm a novice CNC machinist and this was my first bit. It stays sharp after cutting wood and acrylic for days on end. I still haven't dulled it enough to need sharpening yet. It's kinda cool because the bit has this high tolerance that lets you calibrate your machine around it. You can square your spindle using the bottom of the bit. Use the bit to adjust the y gantry, etc. I'm guessing it's laser cut so maybe that's why it's accuracy allows for more than the cnc machine. Also it's straight. I cut down into 12mm acrylic with no runout and straight lines.
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2 of 2 people found the following review helpful By David Peters on April 30, 2014
Verified Purchase
While making a Longworth chuck I used this bit to cut slots in two pieces of 1/2" stacked plywood. Out of the package the bit just *feels* sharp, and that is reflected in the quality of the cut. I've used standard flat-bottom bits for similar jobs and the sawdust clogged up the slot pretty badly, the upcut bit did a great job of throwing dust up and out of the cut.
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1 of 1 people found the following review helpful By phaedrus on August 24, 2012
Verified Purchase
I purchased three of these to cut full thickness profiles in 3/4 CDX on a Shop Bot 4x4 CNC router.
With a 14k RPM spindle speed, the bits made quick work of the job at a 1 in/sec feed rate. Had I not piloted one into a screw, I would have completed the entire 60 sheet job with two bits instead of the three that it ended up taking.

Also, as the product description makes no mention of it, I will add that this bit plunges like a champ.

After breaking four (4) Freud bits doing the same kind of work, I will be buying less of those and more of these CMT's.
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1 of 1 people found the following review helpful By Matt Hughes on March 8, 2012
Verified Purchase
Perfect. I've been using this bit for a couple weeks now, and it has not let me down in any way. I bought this to replace a lesser brand that broke on me when I was trying to do some long mortises with a straight bit. This one cust clean and perfect holes. Becuase it's an upspiral, it doesn't leave any chips or dust in the hole. No tearout on the exit side either. Whether doing mortises or dados, you can't go wrong with this bit. Don't be tempted to go with a cheap no name brand here, with a bit this small it's easy for the bit to break. This one hasn't let me down.
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CMT 191.008.11 Solid Carbide Upcut Spiral Bit, 1/4-Inch Diameter by 2-1/2-Inch Length, 1/4-Inch Shank
This item: CMT 191.008.11 Solid Carbide Upcut Spiral Bit, 1/4-Inch Diameter by 2-1/2-Inch Length, 1/4-Inch Shank
Price: $18.83
Ships from and sold by Amazon.com