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

This is the first spiral bit Ive used, and I gotta say Im a convert. It just chews through material, and produces a nice clean edge. Im very pleased with this.

I have a 1/2 up cut flush trim bit but need something smaller for a tight inside corner. I expected this bit to produce about the same quality cut as my bigger, premium bit. This bit cuts better! The up/down compression really eliminates tear out on both the top and the bottom of the work piece. While I have not used this bit enough to rate its durability, I will be grabbing this before my other bit next time I need to flush trim a piece.

This up down compression spiral flush trim router bit is a great finish bit. Its small size makes it much easier to maneuver in tight places or for intricate work. I am a little new at getting the right bit for what I want to do, but this seems to be a sharp bit for smooth cuts with almost no tear out. This makes this a great bit for me.

EANOSIC Up-Down Compression Spiral Flush Trim Router Bit Versatile dual ball bearings allow for flush cutting as well as template use. The EANOSIC Up-Down Compression Spiral Flush Trim Router Bit is a versatile and durable tool for template cutting and flush cutting. The 1/4 inch shank and solid carbide construction make it suitable for a wide range of applications from hard and soft wood to plastic. The nano coating on the bit provides added durability and resistance to wear and tear. The unique feature of this router bit is its up-down compression design which helps to compress the material being cut, which results in a smooth and splinter-free finish. This saves a lot of sanding. This router bit is especially great for template cutting projects as it provides a precise and accurate cut every time, following the template perfectly. Exceptional value for the price. EANOSIC makes exceptional router/CNC bits!

I took this little bit out for a spin and was very happy with the results. The pictures are with a piece of 1/2” plywood. I grabbed another piece to use below it to test out the bearing portion of the bit as well, but didn’t look to see that the edge was rough, hence the less than straight cut. This bit left a splinter free cut on both sides of the plywood. It cut quickly through the 1/8” of material I was trimming off. Just keep a few things in mind. This is only a 1/4” bit. Take it easy or you’ll probably snap it. The part of the bit that makes the clean upward cuts (just above the bearing) is small. As in about a 1/4”. You have to have the bit depth adjusted correctly so that the bottom of you board is inside that cutting area or else you’ll be using the downcut portion of the bit and probably get splintering.

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.

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.

I used this bit for the first time to clean up the edges of a CNC carving. I purposely cut too shallow with the CNC into a piece of walnut, then cut the carving out with a jab saw. This to me provided the worst possible scenario I could come up with regarding the wood. Hard wood with jagged overhangs that have been stressed already, and a curved edge. As for the router, I used a cordless handheld DeWalt 1/4 in router. Its large in the hand so kinda hard to hold and it is easier to accidentally tilt than a larger router. Then I flushed the corners holding the router in one hand and the carving in the other. This was the worst possible scenario I was willing to tolerate. I got the best results I have ever gotten from any flush trim bit - with the worst conditions I could come up with. There was zero tearout, and perfect alignment. Look at the pictures, they speak for themselves. I hate to write gushing reviews, but this is a standout tool that radically outperforms every other version of the tool I have ever used. Cant recommend this bit highly enough.

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.