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

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.

Works as intended, and cheap enough to warrant keeping around. I use it for surfacing MDF wasteboards only, wouldnt use it to surface my actual workpiece I dont think.

Unfortunately this bit just didnt last long before it started burning the surface of my projects. I used this to surface pine boards ony CNC and it worked great at first but it wasnt long before it started having issues.

I use it for wood and epoxy and it does the job great! still hasnt gotten dull on me. You can never go wrong with white side

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

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.

It came in quickly - It looks like it will do the job well - I havent used it yet, but its as described, and It should work very well.

Used this to cut a table top from a elm tree block of wood. Cut this without any problems and the bit is still sharp.

I just purchased a cnc router and needed a surfacing bit for my wasteboard. After doing a little research and asking some friends, they suggested this Whiteside bit. There are other, more expensive bits out there but since Im just starting off, I thought Id give this one a try. Worked very well for my needs and left a very smooth and level surface. Surfacing MDF produces a ton of dust so make sure you have a decent dust collection system or enclosure and of course, wear a mask when working with MDF. For the price and quality, I felt it was a solid buy.

This is my favorite flattening bit hands down. I use it in my CNC machine as well as in a custom built router sled. It leaves very slight tool marks, that disappear almost instantly when you go over them with an 80 and then 120 grit sand papers.