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)

I bought this flattening bit to go with the router I use in my router sled. It's a 2-inch diameter so it cuts a good amount with every pass. So far, it has held up well, with no issues with the sharpness. It's less expensive than some, so that's a good quality, since it is holding up so well. I recommend it.

Worked great for fattening the wood i need it for . Nice a sharp

Works well. Does leave marks with each pass, however. Sanding took care of that, though.

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

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!

Excellent product.

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

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.