sisona 1/8 3/16 1/4 5/16 3/8 Carbide End Mills Set - Solid Carbide (Tungsten Carbide + Cobalt) - 5Pcs 4 Fulte CNC Mill Bits for Steel - TISIN Coated

Ive used thede mostly for drilling into hardened steel receivers and barrels. It works great for cutting out oin slots on round objects. When my other more expensive drill bits have failed this set has gone through the same material like it was butter. They are a little short cut so for deep holes you will need to do alot of back and forth to prevent jams and damage. Over all im happy with them.

Steel is difficult on a hobby CNC, but these end mills are a great set for getting started. With incremental diameters I was able to attempt multiple speeds and feeds for each mill and get a feel for what the machine is able to handle. After some experimentation I was able to get them milling well. In all I have a couple hours on these mills, so it’s hard to tell what the long term durability will be, but in the short term they are sharp, and versatile with no obvious signs of wear yet.

I use these with my Grizzly mini-mill - they are just the right size for a light duty machine. Useful range of sizes, and economical. Recommended

These carbide end mill bits are incredibly well made. They are very sharp and cut cleanly. This really is a fantastic value. I highly recommend them.

These Sisona bits do cut through thick solid steel pipe and thick ceramic AFTER using a different kind of drill bit to start the hole. You CANNOT use a center punch or anything on ceramic though. And a center punch isnt going to go far in the solid steel pipe I tried to drill through. HERE’S WHAT HAPPENED IN THE STEEL PIPE I got two sets of Stubby Drill Bits for Thick Steel at the same time. The largest NordWolf Bit wasn’t big enough, but it did easily stay centered on a Very Thick, Very Heavy Steel Pipe, and drilled through the first side like hardwood. Then I was going to try the same size bit in this set on the other side and it absolutely would NOT stay, no matter what I did. No matter how strongly I held it or careful I was, it kept walking and wandering off to the side. I tried a lot of times, and it would Not even START to drill a hole. I really wish I could have actually got a hole drilled with one of these bits, because the NordWolf only stayed sharp for the one side. It went completely dull on the very next side. Didn’t even drill two holes. HERES WHAT HAPPENED IN THE BOTTOM OF THE LARGE CERAMIC POTS Two large Ceramic Pots outside needed holes in the bottom before it rained. Again, the NordWolf drill bit was too dull after one use to even start the hole, so I used the next size down. And again, these bits absolutely wandered and walked away constantly, even from the starter holes I made!! I finally finished, but my cordless drill worked harder than ever before. I hope its OK.

These are not the top of the line, but you do get what you pay for, they will do the job, but the longevity of the bits is not that of the higher quality bits

I will come back and update once I have hada chance to use more of them. Maybe the material I was cutting was too hard. More use will tell.

Used these end mills on a project I am working on, and they cut the aluminum and steel just like my other brand end mills do. so far, I love them and would not hesitate to buy more when different end mills are needed for future projects.

Well made high quality end mills. They seems to be made of solid carbide. Im happy with them.

Excellent cutting endmills. I ran these dry at slightly higher speeds and feeds than my usual carbide tooling and they performed just fine with no signs of dulling or overheating. Cutting was almost silent and very fast. I examined the cutting edges after cutting in steel for a while and they showed no signs of premature wear. There were no signs of chip welding at all. Cuts were very smooth and practically burr free. A very good set of cutting tools. Real happy with these.