Slab Flattening Router Bits 1/2 Shank, 2-3/8" Cut Diameter, 12*12*1.5mm Carbide Insert, for CNC Spoilboard Surfacing/Planing/Flycutter/ Slab Leveler/Rabbeting

New to slab flattening. I made the mistake of purchasing a cheap 15 bit at first. I wasnt pleased with it at all. But this bit is awesome. It flattened walnut like butter. I ran 4x slabs thru it back to back. Towards the end I think it got a little hot but it performed well. Its worth the money to buy this bit. Very happy.

It is super sharp. It had no problem cutting cherry, hard maple, walnut, and Purple Heart. It cut so smoothly you almost don’t have to sand it. I did learn that it is best to move your router in 1 direction to avoid chatter. Make sure your jig is dead flat and the carriage perfectly parallel to the jig.

Works great. Very sharp

I love this bit. It has worked flawlessly and is very sharp. I flatten slabs for a countertop business and will buy more of these for use. The ability to rotate the blades and replace when necessary is really helpful in product retention. I am very pleased and recommend.

The picture shows the aftermath of creating a 1/2" slot against a 2x4 framing to secure the 1/2" PVC bead & board panels for the front steps I'm building currently. Because this panel design was an afterthought, some of the 2x4 pieces were too secured to use the table saw to create the channel. With that said, I took out some wood screws where I had to make the channel and by accident, I missed a few and instead of the cutter head getting demolished, it ate through the screws heads that weren't taken out. So there were some chipping that occurred on the blades, but this is after zipping through 4-5 epoxy coated screws. I was very pleased with the results. I also love this design like the spiral head cutter on a planer as I can rotate it. And the cutters are replaceable so it's well worth the money. I'm using this also on Bosch router. Important: I'm not sure how people are destroying the cutterheads fast but I made 3-4 passes to reach the 1/2" depth. You never want to cut anything deeper than 1/8" at a time as it can grab the piece hard or make it go in different directions. Speed was at the maximum (7 on my Bosch). Considering this was relatively wet pressure treated wood, I'm very satisfied with the results! Very durable router bit 👍

I’m using this bit to flatten oak wood cookies and it works great in my 2 1/2 hp fixed base router. I’ve flattened about 100 cookies so far (4’ to 12 inch diameters) on both sides and the bit is as sharp as when I flattened the first cookie. I have not replaced or rotated any of the carbide inserts yet. The surface is not perfectly smooth but the router marks are easily removed with a random orbit sander.

Update.... this bit will not seat all the way to the line in a Triton T001 router! The triton collet is only 1 1/4" deep and the bit requires 1 1/2"! I have been buying the Binstak 3 blade from Amazon for $17, it's fine but thought I'd try this upgrade. I just flattened a 7' epoxy river table , here is my experience. I have a Bosch 1617 2 1/4 hp router and I will say it's not quite enough power for this bit imo. It's fine as long as you don't take off more than 1/64 or 1/32 max. It handles the wood at that depth fine, but started to bog down on the epoxy at the 1/32 depth. I will say that it cuts very smooth, no vibration and leaves a lot less marks than the cheaper Binstak one. I flattened both sides and it still had sharp enough blades that I think I can keep using it on the next slab. Summary, I like it better for sure, but may need to upgrade to a 3 hp router if I want to get more aggressive and take off 1/32 to 1/8 at a time. Or I may use the Binstak for initial aggressive passes and then switch to this one for finishing passes.

I had a different slab flattening bit with 4 wings. This one with 6 wings seems to be smoother. I also like the fact that the carbide cutting inserts have for edges so you can just rotate them to get a new edge when 1 gets dull.