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

I purchased cutter to machine mortises, really pleased with finish.

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.

I was impressed with the results. Good quality and very sharp.

Excellent router bit

Did not last long, Started to burn quick

I been using this router bit for years, like the quality and the price, will be buying the same in a regular basis

Excellent edge quality and sharpness. No problem routing 1 3/4 depth red oak with no deflection.

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.

This is exactly what I needed when building a front door with 3 inch deep mortises and using a 3hp plunge router.

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.