CNC Spoilboard Surfacing Router Bit 1/4 Inch Shank, Extra Large 1-1/2 Inch Cutting Diameter, Slab Flattening Router Bit Planing Bit Wood Planing Bit Dado Planer Bit(Carbide-4 Wings)

This thing worked perfectly to flatten out some desktops I made. After gluing some regular pine 2x material together to make a table top, this bit worked like a charm, in combination with an easy to make router sled, to flatten it out. I'm currently typing this review on the desk tops I made with them! Couldn't be more happy!

Received spoil board bit quickly and it cuts wellwhen doing a finish pass of .2mm there were now witness lines left

I received this 1-1/2 " router (1/4" shaft) planing bit in two days and it works quite well. However for my router the shaft is probably 1/4-3/8" too short so I have to keep raising the slab. I am planing the surface by running the router over the board. It would have been better if I could just keep lowering the bit (within reason) as opposed to raising the board and realigning. But it does a nice job cutting.

Using this bit to level a slab and it’s held up extremely well

Excellent product.

Excellent bit for surfacing using my new sled... smooth job!

Flattens great! It can take a beating and still surface properly.

Tried to flatten a piece of hard maple where the surface varied up to 2mm, and taking shallow bites (.5mm). The bit chattered tremendously and did more harm than good. I ended up with a better surface using a 3.2mm bit, but of course it took over an hour to do.UPDATED - I found an issue with my machine setup that adversely impacted all work, so please disregard for now - I'll provide an update once I have the robot tuned up.