EANOSIC Upcut Spiral Router Bit 1/4 inch Shank, 1/4 inch Cutting Diameter, Extra Long 3 inch Solid Carbide with Nano Blue Coating CNC Router Bits End Mill for Wood Cut, Carving

I bought this bit rather than others of the same style because I needed the extra length. I was concerned about the durability due to the extra length of the bit. It has performed as expected, and hasnt broken. And has stayed sharp. A very good buy.

upcut bits are the only way to assure a clean cut at the edge.... due to how they cut... they cut upwards towards the shaft so in a handheld router, put the good side of the workpiece down in a router table or CNC do the opposite... this bit has produce superb finishes, highly recommended, great price point... 5 stars

This upcut spiral 1/4 router bit by EANOSIC is very sharp and works perfectly for wood carving and cutting. The Nano Blue coating with high hardness really does aid in heat resistance and retains sharpness, which is crucial when working on medium to large projects. I highly recommend this bit!

Good quality bit. Perfect for my CNC operation.

The edges on this bit are very, very sharp, so be sure to take care when handling it. Its all too easy to slice yourself when taking the bit out of its case, or installing/removing the bit from the router. Used this bit to rout cutouts in copper countertops (the copper layer is about 1/32 thick). Even with a good bit, it is slow work, but this bit did the job, and left a nice clean edge on the cutout.

Tried out this 1/4 bit on a 3hp cnc. 15,000 rpm @ 100 inches per min. Clean cut, no chatter or issues. Bit did not come with feed/speed info so ran it like my Amana bits. Will see how it holds up over the next few weeks of use.

I like it

Excellent for getting way down into a design! Especially when grooving areas for slip in pieces like a two part frame I do - Nice to have a bit that my machine limits can work with also without having to place my router physically lower to reach - Leaves nice and clean cut walls and works it’s way through fairly easily - Definitely would recommend giving this a go! 9/10 a winner!

I use this Router bit for making a 1/4 grove in chairs I’m caning the seats and seat backs, it’s just the right size and sharp enough for Oak. The Bit is flame hardened to preserve sharpness.

I used this bit in my large woodworking CNC machine. The photo of the circular cuts is a test pattern I use for calibrating Z-steps. There is some tearing on the edges of the circles, but these cuts are in hardwood plywood and I expected this. The second photo is a close-up of a 1/4 slot cut into 3/4 plywood into which some 1/4 plywood will slide. The groove is plenty clean for its intended use in a cabinet carcass.