60-Degree V-Groove Bit, 1/4-Inch Shank, 1/2-Inch Diameter, Carbide-Tipped

I run CNC shop and do a lot of cutting everyday. I use bits and tools of all types, but I find that V bits are the most difficult to source. The reason is V bits perform differently depending on the manufacturer, design, material, etc.I find Amana and Whiteside bits the most dependable V bits, but I'm always on the hunt for something better. This CMT 858.001.11 is definitely something better...This bit does a superb job. Cuts are crisp and clean and I really like that the bit is cut from a single carbide slug (mounted in a mild steel body). The 3 flute design allows me to slow down the RPMs more than a little, for MDF and the like I've been at 16k rpm. The feedrate is around 60ipm. I say "around" due to the velocity fluctuations occurring from the many short moves that engraving often demands. On longer moves running at 120 to 180 ipm is totally possible, there I would bump the speed up to 20k rpm depending on the material. I have not cut any plastics with it yet, but when I do I'll update this review.Check out my pics... I think this is a really great bit and will be buying more of them.Happy cutting!

Excellent bit. Been using CMT bits in my trim carpentry work for years, and now use this one for CNC work. It is very finely made, and with 3 cutting edges it cuts much cleaner than 1 or 2 cutter versions. Does very fine detail work because the tip is so carefully ground. Also seems to stay sharp for a long time. Well worth the extra money!!

This is a great cutter for a CNC mill. It's sharp and strong. I have purchased a few of these but the last two seem to have quality issues. The cutting edges don't look as clean, there are burrs and the edge is a little rough. I hope this is just a fluke.

I had read great things about this bit. My cheap one finally got a full tip so I decided to order this one cause it seemed like an upgrade. Immediately it began cutting like trash. The first test cut I did on my sign it almost “pushed” the material out of the way instead of cutting. It’s like the first 20% of the bit was dull out of the box. Highly let down but ya live and learn. Just trying to pass on the experience for those thinking this is a hyped upgrade. Thanks all and have fun!

Sharp VBit and cuts clean designs. Seems to last a very long time. This is my second one and I use them to cut wood and MDF. No issues in buying again.

Works great would buy again.

Ive mainly used these bits on pine wood with my cnc machine. So far ive I truly love them especially for the price. Once my feeds and speeds were dialed in nicely I get really nice cuts mith almost no tear out. If your on a budget I highly recommend these bits. Dont listen to negative reviews of those who are clearly running the wrong speeds.

It seems to be a fine bit - but not sure it is 5X as good as the ones I buy for $4... We will have to see how long it lasts. It sure seems to make more noise when V-Carving hardwoods than my cheaper bits.I use them to do inlay cutting boards and other carvings on reclaimed wood.