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

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!

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!

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.

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 got this upcut spiral router bit to use primarily for mortising. Measuring the depth of cut using a ½ thick mortising template, I should get 1 1/8 depth of cut, adequate for most mortises. I tried the bit on a scrap of red oak where I had made some test plunge cut holes for shelf pin brackets for a book case. The original cuts were with a straight ¼ router bit. The cuts with the upcut spiral router bit cut quickly but burned the wood, which surprised me. See the photo. Even though the straight router bit had been previously used and had some pitch on the carbide blade, it made a cleaner hole. Given the use in a mortise, this is probably is not an issue, but I had expected a cooler cut from the spiral bit.

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.

Great price point for a good quality bit for my CNC machine. Cuts clean and the bit is very sharp. My only comment or complaint would be that they would put a description label on the case for storage instead of the envelope.

Good quality bit. Perfect for my CNC operation.

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.

I like it