SICWOOD 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.

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 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.

I bought this for a one-time need to flatten an old workbench and it worked like a charm. I've since surfaced tree rounds, large slabs and other uses and still have not had to rotate the blades. Surprisingly good at this price point.

Worked great on my walnut slab. Clean cut and stayed sharp. I will probably get a larger one to cut down time.

Used this to flatten a few slabs I have. Took a ton of wood off and the first blade is still sharp, I have not rotated them yet. For the hobbiest, this bit will last years. Took 3 cheap bits to do this on my last project. On my Bosch router I used setting 3 and worked front to back right to left and this thing eats walnut. Also the bit is cool to the touch and still sharp after 40sf of slab and taking an 1/8” or more on each pass. Cool bit means it will last a very long time. Would buy again.