Upcut Spiral Router Bit 1/4 inch Shank, 1/8 inch Cutting Diameter, Extra Long 3 inch Solid Carbide with Nano Blue Coating CNC Router Bits End Mill for Wood Cut, Carving

These 1/8" upspiral bit work better on the CNC than far more expensive name brand bits. I'm very happy with the durability of the bit; and the clean line of how it cuts. Will purchase these again when I'm in need.

I’m impressed. First “non name brand” bit I’ve had. Purchased because of a new project I wanted to make on the CNC and was worried I’d break a bit. This held up to my test and has been a workhorse on at least 20 small projects.

I have used this for several projects now and it is still working as expected

These are great router bits. They hold their edge very well and are at a great price and availability.

I use 1/8" Upcut Spiral Bits on a 2nd toolpath to clean up small areas a larger bit will not get into. This bit worked very well for a Business Card I cut in Brazilian Walnut which is very brittle. I need to use the bit more to determine durability however it is very sharp and cut well on this project. I will update the review after more use of the bit. The cutting diameter of the bit measured 0.122" rather than 0.125". so if your making precision cuts you will need to allow for this in your toolpath setup.

I was using this bit to reach into the bottom area of a box on my cnc machine. The extra depth of the bit allowed me to get a bit deeper than I could with some of my other similar bits. Because it's a downcut bit, the cutter seemed to do a decent job at keeping the wood fibers pressed down and left a nice little finish. Little bit of sanding it was good to go!

Poor quality

As long as you don't push the feed rates you won't break the bit. Works perfectly fine and have been using it for lots of milling so far with great success. Super sharp and super straight.