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

Do not waste your money. This is trash! First pass on a table top taking only about 1/16 got about 16 across and the bit bent, and damaged the router plate on the under side. Will cost me more to repair the router than the cost of a more expensive quality bit.

Do not try this buy a 1/2 inch shank bit this one bent and is dangerous .

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

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.

Bottom line: Very economical bit and operated as I expected for CNC spoil-board resurfacing but does not provide tool files for CAD S/W. Just got finished resurfacing the spoil-board on my CNC machine with this bit. I was happy enough with the results. However, when I inspected the bit when the job was done, some of the black paint on the back of the cutting surfaces was peeling off. I dont think it affects the functionality of the bit but I do think it speaks to the quality level. It is VERY economical but there are no specifications provided other than the diameter and MAX RPM which is 18000 and I could find no information online for the product other than whats in the listing. It comes with a clear plastic holding case that is very nice but there is no useful information printed on the case. I would give it a better rating if it at least had safety information on the case. After completing the surfacing of my spoil-board with this bit, I used my Amana spoil-board resurfacing bit (RC-2255) to re-surface the spoil-board. Maybe its not too fair to compare this bit to a bit that is at least 7x the cost but thats what I have and normally use. In any case, the surface was slightly smoother with the Amana bit. I also couldnt find Vectric tool files for this bit which is something that takes all of the guess-work out of the specifications for operating the bit. Since the diameter and the MAX RPM specification was the same as my Amana bit, I used it as the basis for speed and feeds. The cut depth I used was .015 (less than 1/64). For economy, I can recommend this bit but for quality and complete information, Ill stick with my Amana bit.

Muy buena calidad

I ordered this for using with my CNC. Works great for waste boards. Better than my way more expensive bit for the same job. I recommend it.

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

It flung off and nearly killed me