CNC Spoilboard Surfacing Router Bit 1/4" Shan, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking

As someone just getting into some wood working it can be overwhelming to think about the different tools and equipment you need to do things. I can't buy rough milled lumber and save money because I don't gave a planer. A good piece of advice is buy things like router bits as you need them and don't get the cheapest thing. This surfacing bit is large enough to cut down on time, well made to do a pretty clean job, and thoughtful enough to be able to rotate the cutting blades for extended life. My first few times using this have been excellent. It cuts clean, smooth and flat lines allowing me to get the job done that a planer and joiner could do. Yes, those other tools would be faster but since I already have a router, a simple sled allowed me to get 2 flat surfaces that needed nothing more than finish sanding. I've used this to reduce thickness of boards and take out some errant marks made from milling. Extra screws are nice especially because they're likely a specific size to hold the cutting blades. The 1/2" shank keeps everything secure and tends to heat up less than 1/4" This should be good for all wood types and I'm sure it will work for soft metals like aluminum or brass without destroying the blades. I am very happy with the purchase.

Works great for me! I only take 1mm passes, but I can do it at 300 ipm so I love it! I use it to do most of my initial milling because my jointer for up my chip barrel so quickly it makes everything take longer, so my cnc make small chips that take longer to fill instead of the big chips my spiral head joint leaves. So I use this bit A LOT! Mine is fast, balanced, and sharp, it also leaves a smooth finish. I wish I found it much earlier. I have an altmill with a spindle so idk if that makes a difference, but it's great!

Bought the 1/2" shank 2" diam. 3 tooth bit (just because it seemed most reviews were of that one). Needed to flatten out a walnut end grain cutting board with a handheld router (Bosch 1617) and a janky router sled. Process: Made sure the sled was not warped at all, and was clamped securely. Shimmed the material to be flattened to be level as possible, and then shimmed it securely to the sleds perimiter (no wobbling, no sliding). Recommended speed for a 2" bit seems to be 12-16,000RPM, so I started it out at setting 2 (13,500), taking it slowly, removing only about 1/16". It really dragged, and the surface was fairly torn up. Bumped it up a couple times between the sides, and ended up getting best results at 4 (20,000 rpm), a bit higher than top recommendations, still keeping the cuts very shallow. The sled ended up being stable, and the bit worked fairly well. Note: I overlapped my sweeps by 3/4" inch or so. Doing it again, I think getting one with cutters on the top (bottom) as well as might be a better option, especially considering the additional cost is negligible. Or, maybe that 6 cutter head one would be better. If I had one of those woodworking channels, I'd do that comparison. As others have mentioned, I would have liked an additional 1/4" of shank. All in all, results were fair. Worth it for the amount of times I will use it. I would upgrade to one of the above mentioned bits if I were to continue to use a router sled for more than a few projects over time (and I would get something with rails and a dust collection system if I were doing larger projects).

Built a gian 22x22x6" chopping block made of white oak, and needed a way to flatten it. It was too tall for my CNC, so I used a router sled and this chonk of a flattening bit. Having flattened on a CNC with a wee 1/2" bit, I started this taking a tiny amount and overlapping by half. After a few minutes, I noticed I was getting dust, not chips. Rather than size the board in tiny steps, I lowered the bit a couple of mm to try again. I was paying attention to make sure the router didn't get bogged down, the board didn't move, and that my lines looked clean. This thing just CHEWED through the endgrain and left me with a super flat surface with no burnout whatsoever. Sanding from this point was so easy with such a smooth surface. If you're on the fence, get off the fence and buy the thing. It's a chonk, seems like it's a great quality, and the price is right as well.

I was pleasantly surprised how well this tool worked. At this price point I was concerned that the tool wouldn’t be balanced well and would have to run at low RPMs. Knives were sharp and it performed great. In the video- 1200 RPM @100 inches per minute

Works really Great. I surface planed (8) 3' x 5' panels made from Douglas fir with no issues. I purchased this one because of the extra metal supporting each cutter. Ran the bit at 14500 rpm with no oscillation. None of the carbide inserts came loose and they show very little signs of wear. One of the things that would have made this even better is if they added a few extra carbide inserts just encase one was damaged or came off; to go along with the screws that were included.

I will be honest, this was my first wood cutting bits with inserts. I thought it would be more economical as the Chinese surfacing bits with brazed carbide cutting tips didn't last long when cutting hard woods but now I am not so sure. I thought I'd take light cuts (.25 mm) to get the feel of the new bit but the tool chattered and gouged the workpiece. I thought maybe I needed to take deeper cuts so I tried taking a 1 mm cut on a piece of dark cherry. Not but a few minutes into the cut on my 3018 CNC router the tool chattered so bad it knocked my dust boot off, shattering it and sending pieces sailing across the room. Since losing my dust boot I have not used my router or this bit so I can't say much other than I wished I'd purchased a half dozen 1 inch surfacing bits from China instead of this bit with interchangeable inserts. Bad thing was I bought a box of inserts when I bought the bit. If I happen to find out I was not using his bit correctly in will update this review. As a retired machinist I am very familiar with metal cutters with replaceable inserts and thought I wouldn't have any problems. I ran the tool at high rpm and a low feed rate, maybe someone can tell me if I am doing something wrong? After upgrading to an 800w spindle motor the but no longer chatters and leaves a good surface finish so I raised my review from 3 to 5 stars.

Awesome little bit. I bought this to flatten a 98"x25" black walnut slab. I paired with a market place Ryobi router and cheap plastic sled. Worked great, even when taking off 1/4" at a time!

Super sharp and excellent quality. Very impressed with this flattening tool

Great product, comes with protective glue on the bit to protect it from rust etc. so you don’t need to use it straight away. Very sharp and has proven itself to be a quality item. I would buy again.

I purchased this to flatten large wood slabs with my hand held router(DeWalt 2.25hp) - it is working well so far. I've leveled/flattened 2 24 inch by 16 inch slabs. Zero issues, and a quality cut line. I'm very happy with this product (again, so far). Will update if any issues arise.

Awesome tool. Very sharp, (got some cuts to prove it.) Worked out of the package, no adjustments needed. Works exceptionally well on hardwood.

Item was as described and it is of very good quality with a very reasonable price tag. It arrived before the specified time. Thank you.