CNC Spoilboard Surfacing Router Bits, 1/2 inch Shank 2 inch Cutting Diameter, Slab Flattening Router Bit Planing Bit Wood Milling Cutter Planer Woodworking Tool by BINSTAK (Carbide)

I used this to flatten end grain cutting boards on a home made flattening sled I made. Overall I do not think you can beat this bit. The price is low and it actually does a pretty good job. My only complaint is it does create a ball-park lawn mowed effect, so be ready to spend a lot of time sanding that out. I'm sure that comes with the territory with flattening bits due to how they bend the grain based on the direction of bit spin. So far, I've flattened 3 white oak end grain boards all 10 x 11, and 6 walnut end grain boards all 11 x 17, and other smaller things such as coasters and other smaller walnut end grain boards and the bit is still has sharp as the day I got it. I do take shallow passes though.

This flattening bit is a high quality bit at a good price point. I used this to flatten oak cookies that I gave as Christmas gifts. I’ve also used it to make a bunch of charcuterie boards. The bit has stayed sharp after multiple pieces of hardwood. I used it with a Porter Cable plunge router and it was a very smooth cut with no tear out or burn marks. Take your time with these cuts and don’t force it and you’ll be happy with the results. Definitely recommend.

Sharp right out of the box. Got this to use in a router jig for flattening boards and so far it is working good.

I was very pleasantly surprised at the quality and performance with this bit. I can't speak to how long it will last since I've only used it to flatten one slab, but that slab was a nearly 2'x2' block of exotic hardwoods and it worked flawlessly. Very impressed and pleased with this router bit, especially considering the price.

I used it to flatten a 38 x 60 inch top and had no problems at all. The bit still looks sharp after using it, so I think it will last for a couple more projects. For the price, it’s definitely worth having.

Great bits use them to flatten these wood slabs

I used this all the time on old hard oak logs. It’s time for a new one and I’ll get another soon.

This bit did a good job flattening slabs, but even with soft redwood it dulled rapidly. More expensive bits may last longer.