CENYB CNC Spoilboard Surfacing Router Bits,4 Teeth 1/4 inch Shank 2 inch Cutting Dia with Router Collet for Woodworking Tools

Please stay away from this bit. Spend a little more for Freud which is a top tier brand. Notice many of these reviews are people who received it for free. This could have ended a lot worse than just a damaged router (not to mention my wood piece). I will say, though, that I was refunded but still - a product like this shouldn’t be on the market

I built my own flitting sledge. And flattened 2 2×12 boards. Always wanted to do that.

I wanted this to be a good product, but am slightly disappointed. I ran a few test blocks through to make a tongue and groove board. The end product wasnt bad, but it was a little looser than I would like to see for a tongue and groove joint for say...cabinet doors. The router bits that I received made a groove that was 200ths of an inch bigger than the tongue. Slightly perplexed by the extra slop, I checked the bits cutter heads with a digital caliper and found that each head was a different size making the groove wider than the tongue ( which I think was the problem). The tongue cutter heads were also each different sizes which was interesting... Im sure it would work great for some things, just not cabinetry. I would probably invest in a higher end router bit set to avoid the inconsistency. Pictures will show the numbers that I was looking at on the bits.

It flung off and nearly killed me

Good router set. I have a router but these need something more stable like a router table or something like that.

These work but not what I expected.

This is a decently sharp bit that planes surfaces reasonably well. I have no complaints!

I recently needed to flatten the mdf spoilboard on my CNC. I ran my typical flattening toolpath, and this bit performed just as well as my previous bit. It is a little more lightweight feeling, but the cut was great. With this performance at this price, it is hard to justify a more expensive bit assuming it will last a reasonable amount of time.

Using this bit to grind out material from a butcher block. Figured after how much material I was digging out that the blade would soon dull. Didn’t happen. Still running strong.

One of the four blades was sharpened slightly off-skew. The perpendicular edge was straight, just not the face edge. Itll still work for me, but its a hit against quality control.