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

The overall quality is excellent and it cuts Baltic birch plywood very well.

I was very impressed with the quality of the cuts and the outstanding fit of the parts. Im making 6x6 pergola posts using 2x6 #2 lumber. By machining one surface flat on the planer and then laying the flat side down on the CNC table, I get perfect dadoes and rabbets which perfectly interlock.

This bit is solid carbide, EXTREMELY sharp, cuts like a hot knife through butter, and is tall enough that you can attach a jig to the bottom of your plunge router and still get to a 1-1/2 deep mortise or maybe a little more depending on how thick your jig base is. Very happy with it.

This three flute spiral bit cuts far smoother that the single flute bit I was first using to edge a workpiece. Expensive, but worth cent!

Clean smooth cut grooving in hard maple @ 23000 RPM. Good quality bit.

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

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.

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.

We used this bit in a circle jig to cut 2 thick pieces of poplar. Worked very well and is still sharp after 12 hours of use.

Recommend as a value purchase. Cuts like a hot knife through butter!