CNC Spoilboard Surfacing Router Bit 1/2" Shank, Slab Flattening Router Bit Carbide Planer Router Bits Wood Milling Cutter Planing Tool Woodworking Tools by BINSTAK

Husband really uses these a lot so we are so happy to find them on Amazon.

I decided to give this router bit a try for flattening some slabs of cherry. I've had absolutely no problems with this bit so far - I suspect the reviewers who experienced burning or rapid dulling of the bit are overheating it. You must have a variable speed router to run this bit at the right speed. This bit can remove a lot of wood in a hurry, but it works much better if you take it slow. Here are the details I've found that will maximize your success with this bit:1. MAX RPM IS 16,000 - I found this answer from the seller in the questions above. Slower works great too.2. Make passes of only half (or less) of the cutting width - in this case 1" or less total for each cut.3. Keep your cutting depth on the shallow side - 1/8" to 3/16" works best for me. I'm using a medium sized router (1-3/4HP), and it starts to bog down and overheat when I try to cut 1/4" or deeper. With a bigger router you might be able to make a deeper cut, but I suspect the bit will also last longer if you don't push it.4. In retrospect this seems obvious, but it took me a while to figure it out - as the cut gets deeper, you can reduce the width of your cut and the load on the router/bit will stay the same. For example - cutting 1/4" deep and 1/2" wide removes the same quantity of wood as a cut 1/8" deep and 1" wide. When a warp in your plank forces a deeper cut, you can make narrower passes instead of adjusting your depth of cut.

Used this for slab White Oak. Eats through wood. Take a small skim cut and take your time. Get your RPM right wiht the router. Leaves the surface smooth and ready for a planner cut.

I have used this bit for flattening very rough hybrid poplar. The bit works great on this extremely soft material. I can't say how it functions on something like white oak. You will have to try things for yourself.I would rate this inexpensive Chinese made bit highly--it has worked great for me.

I enjoy making log ends into end tables, which requires making both ends of the log as flat and level as possible. The big box stores do not carry router bits of this size (at least I haven't seen any) so I was using a 3/4 inch wide bit 1/2 inch shank to do the job. Then I saw this online and decided to try it.At 2 inches wide it required I change from the plunge base to the fixed base, and change the bottom plate with the larger hole so this bit would fit thru. I use the router on a sled as I grind off the wood. This bit was fast and smooth and I actually took a nearly 2 inch wide cut, I think on harder wood it would have to be less, but it made my task so much easier. I was elated !Haven't had it long enough to comment on longevity, but after this one project I am very very pleased with my purchase ! 5 stars !

I flattened a large white oak slab cookie with this bit. The one I used before was $80 and worked fine but got dull quickly. I tried this one out for a fraction of the price and it actually performed better! Clean cuts and still sharp against that hard oak is pretty impressive!

The blades aren’t perfectly flat so I get swirl marks.

Worked out great