Whiteside 6210 CNC Spoilboard Surfacing Router Bit, 1/4 Shank

Bought this to flatten boards to wide for my jointer and for end grain cutting boards. Works great

This bit is a very nice bit, but needs cleaned frequently. Im picky and clean this after almost every use if there is a build up of pitch on it. Used mostly for flattening stock in my CNC.

Ive read stellar reviews and have used this bit for a handful of projects that were spread out over about a month. Facing my spoilboard, and a couple MDF & Birch wood projects. I tried 1 epoxy inlay project and the bit was actually ripping out epoxy along each pass. This bit worked great at first. Not anymore. The edges of the but are not quite sharp anymore. Theyre actually polished looking, which lens me to believe that the carbide grade isnt that great and/or the relief grind is shallow. First off, I know for a fact that the relief being angle on this bit is very shallow. In the machining industry, relief grind is generally @3 degrees. This does not appear to be the case. The cutting edges are polished. One usually only seen this when machining extremely abrasive materials such as glass filled composites, titanium, or nickel based alloys. I highly recommend paying the extra money for insert bits.

Good bit, cuts well for 1/4 great for the price. Rough slab 3 to 2 no problem

I will admit, i just got this bit and Ive only flattened one walnut slab.. that being said, cuts like butter. I would be extremely surprised to find a better flattening bit at this price range that can perform as well. Awesome product!! Would love to try the 6220 when i can.

Surfaced a solid hardwood cutting board with this that was made of Walnut, Ambrosia Maple, and Purpleheart wood and it went to work without a single issue. I will be ordering more of this one when I need to replace it for sure and wont think twice about it!

I made a router sled and used this to flatten a hardwood /epoxy river table. I did get some burning but im chalking it up to user error and running it too deep. I stopped to clean the blade edges a few times and that was helpful

Good price. Cut through my waste board to resurface it with no problems. Ran it .1 DPP @ 100IPM.

I love this bit. It cleans materials without leaving any marks whatsoever. I bought this one after wasting my time on another bit for half the price. This is still a very affordable, high quality bit. I will buy more of this one when needed.

Ive used this bit several times to flatting a few slabs. I wanted a slightly smaller cutter so I could use my palm router and not overload it. This bit works perfect and leaves a great finish on my slabs. It took 2 passes of sanding after to get a great finish.