SpeTool Upcut Spiral Router Bits Extra Long (4 inch) with 1/2 Inch Shank , 1/2 Cutting Diameter Solid Carbide CNC Router Bits End Mill for Wood Mortises and Cutting Dadoes Carving

Initially it was great but if felt like it got dull pretty quickly. Overall it’s still pretty sharp, but the tip is what’s used the most is dull. If they can add some kind of coating just on the tip it will greatly benefit its life. But I also have a WhiteSide brand tool and I feel like it lasts longer.

Used this on a recent desk project. Using several passes with this bit I was able to get nice clean cuts. The bit is very sharp so handling with care is needed.

I needed this to cut mortices in red oak for a KS bed, see footboard leg in photo. In the picture you can see how effortlessly it cut into one of the hidden screws holding the 2x4s together to make the legs, there was no visible damage to the bit after cutting into 2 screws it completed the 16 mortices easily. Cut was silky smooth no chatter, finish was very clean.

Used it only once thus far. Cutting 2 cherry. Very sharp, low noise, low vibration. Good enough for me.

Super smooth finish on my boards.

Perfectly smooth and fast cut through 2 of Walnut

Using this on my CNC lathe. Works great. So sharp you need to be careful just handling the bit. (Voice of experience.)

Cut a 60” round table top out of buscuited 2x8’s Cut down about 1/2” per pass. Smooth cut, crisp edge. 5-stars

Run in a commercial shop on a CNC router in walnut and Oak. This thing performs better than the big names like whiteside, freud etc and at half the cost. Its so sharp its virtually silent. Very impressed.

Solid bit that cuts smoothly with little splintering. Didnt perform as well as Id hope with plywood but Im sure Ill be using this bit often in the future.