Up Down Compression Spiral Flush Trim Router Bit, 1/4 Inch Shank Solid Carbide Flush Trim Router Bits CNC Spiral Bit with Nano Coating by EANOSIC

I am giving this particular bit 3 stars, because it could have been a rare manufacturing flaw. I used it on a 1 inch cherry wood removing about 1 to 2 mm, and after about 5 minutes and 2 feet it fell apart. Luckily I had an upcut bit by the same manufacturer that I used to finish the work. The other bit performed perfectly.

Sharp and leave a good top and bottom finish. I have had no problems with bits from this company. easy to use.

I have a triple fluted flush cut 1/4 inch router bit that I usually use in my construction business. I have never used a spiraled flush cut bit, so I thought it might be fun to try out. I used this spiraled flush cut bit it my trim router at first and the bit had no problems cutting 3/4 pine trim boards. However, I did notice that the cut was a little wavy because the trim router has a small base plate so I tried it in my full sized router with a 5ish plate. The cut came out much straighter and I would recommend using a bigger base plate for it unless it doesnt matter if there are a few waves in the cut. It cut through 5/8ths OSB plywood and didnt leave any burrs on the surface. There were some on the bottom of the plywood but I assume that is from the spiral moving downward. I like the fact that the bit is only 1/4 in diameter the whole length and that it doesnt have to take out as much material as my 1/4 fluted bit that is 1/2 at the cutting blades. So far... I really like this bit and am hoping that it stays sharp for a long time so I can use it for many years.

The good thing about this bit, is it is small. I used it with a template with a lot of tight corners and grooves. It did well getting into the small recesses. very little work after wards. Because the shank is 1/4 and the bit is 1/4, there was a little chatter when it was grabbing the grain and would jerk the wood and gouge. I did use very small passes with this, because I had to use smaller passes to prevent the chatter and for safety to of course. If you think about it, a safe pass is less than 1/2 the bit, if not 1/3 and less of the bit. if this is a 1/4 bit, then you should only take 1/16 off on each pass. I think if I was going to use this again, i would use a larger bit to take most of the material, then use this bit to get into the intricate places.

I have a couple of bits from this company, and I’m impressed with the quality. This particular 1/4” bottom bearing flush cut bit is a useful size for following tight patterns or for trimming flush to another piece. You do need to make sure your pattern is accurate and smooth as any imperfections will show, given the small bearing diameter. I’d consider this a tool for precision work, rather than hogging out the edges of countertops- solid carbide is not for forcing, and the 1/4” diameter means you need to take it slow. If you have never experienced the improved quality of cut from a good spiral ground router bit, you should give this a try.

Unreal quality for a great price. Leaves a great edge finish. No tear out or splinter. This is the 3rd brand of compression spiral I have tried and this one is far superior from the others. Used for several projects and havent seen any decline in the performance. Definitely recommend this product.

This is my second bit from Eanosic and just like my first one I am happy with it. It comes in a nice case for protection, and it is very sharp. It cuts material cleanly and the up down compression leaves nice edges on both the top and bottom as long as you set the bit up correctly. It is not meant to take much material off so you will need to use a bandsaw or jigsaw to cut away most of the material first. I only use it for pattern routing which is what it is meant for. Pay attention to the size of the material you are using because you may need to get a larger bit. I am using it for 3/4 material and it works great. Very happy with this bit.

The 1/4-inch Up Down Compression Spiral Flush Trim Router Bit performed well in my testing. The bit cuts fast and leaves a smooth surface. I tested the bit with 7/8-inch-thick air-dried Cherry wood. The bit performed as described.

Hmm, well this has a good cutting edge, seems to make a perfect edge, no wobble in the bit and good longevity. Good buy when compared to the same bit I got from HD at a better price.

This bit is only used to produce repeatable results using a pattern attached to the workpiece as a guide. A bearing is used to follow the pattern and neither the process or this type of router bit are anything new. What sets this bit apart is that it cutting edges are slightly angled to slice both up and down. This results in a shearing cut rather than a chipping cut and should produce a smooth cut with little or no chip-out - well see. This is also a small diameter bit. Itll get into tighter areas, but its small size requires a bit more time and patience. You cant force this bit because its cutting tip speed is much slower than a bit of larger diameter. Both rotate at the same RPM, but the larger bit has to move faster around a larger circumstance. This little bit has the potential to produce edges ready for finish, but you cant rush it. Its also important to rough-cut work pieces very close to their finished size because you cant hog material with bits as small as this. This bit is for the last 1/8 give or take, youre not going to plow with it, at least not very far before it breaks from heat buildup. Use it as intended and with care and it shouldnt disappoint.