HQMaster Spiral Router Bits Down Cut 1/4 inch Shank Solid Carbide Nano Blue Coated Spiral Downcut CNC Bits End Mill for Wood Cut Carving Engraver (1/8 Cutting Diameter)

Nice carbide router bit, leaves a great finish on all wood types. Stays sharp and cuts very well.

This is 1/4 inch Shank, 1/8 inch cutting Ball Nose End Mill CNC router bit with Nano Blue Coating. Its a Spiral CNC Bit for Wood Cut, Carving, or Engraving. Im using it in my CNC machine for wood carving. Its being used in a Makita Trim Router and it works very well. Ive used it on a few projects now and they look good with just a little sanding. Nice bit.

The quality is fantastic and I use 1/4 more than any other and do tend to wear on them. These hold an edge well and have been put to great use cranking out holiday gifts. I cant think of an argument to pay more when this quality stands up to other really expensive options Ive tried. Update: This bit continues to hold an edge well after dozens of operations through hardwood at pretty aggressive settings of speeds. These are a fantastic workhorse bit to use.

TLDR: Duller than a bus trip to Branson. I Picked this downward-cutting end mill for some prototype packaging I wanted to develop using standard EVA foam. This endmill cut beautifully at 10K RPM for about ten pieces and then quickly began to dull. The CNC would continue to push the cutter through the foam, but the material would just flex and compress until the cutter passed leaving an inconsistent and wavy finish. This must be the lowest quality carbide they could source. I had to double-check the listing to ensure I didnt buy an HSS end mill by mistake. I am going to try to cut some aluminum or other harder material just to see if the other reviews for this product are fake. Id be shocked if it even cuts a chip given how poorly it wore doing something as simple as cutting foam.

Worked well even with a very high feed rate and stepover of about half the width using the entirety of the flute for quick roughing. Ran it for about 8 hours so far and it still feels very sharp.

This 1/8 cutting 1/4 shank ball nose bit came in a standard end mill case that protected it during transit. The case was nicely labeled so you dont have to. The nano-blue coating covered the top end of the bit evenly and cleanly. The ball nose left a nicely rounded bottom on the groove. The bit cut easily and dispelled chips well due to the up-cut flute design. This bit seems well designed and stayed sharp through my testing on both soft and hardwoods and I expect to get a good long life out of this bit.

Tested in mild steel. The cut was very smooth as the bit is very sharp. Should work well in many materials. After testing I used a 1/8 drill to check the size. The naked eye said it was a little large. Was it runout from my setup ? Bent bit ? Manufacturing defect? I checked with a micrometer and found the bit measured .126 Probably not a really big deal in most cases. I will call it a quality control issue. Or maybe when these are sent to us vine reviewers we get the ones that didn’t pass quality control. Might just be the perfect size for some project.

Great value and quality for this ball nose router bit. I have used this for a lot of roughing of 3d models in hardwood. Still sharp as the first time I used it.

Great bit nice and sharp measured to meet specifications. I like the way these bits cut nice and clean.

This is an excellent bit that will help you to get the cnc results your after time and time again! Pros: 1. Excellent engineering minimizes chance of shearing 2. Bluing helps with rigidity and overall performance 3. Reasonably priced 4. Durable and long-lasting bit Cons: 1. The bit doesnt come with any markings, making identification more difficult when not in its case.