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

The machining of theses end mills is good. It is not on par with high end U.S. made mills but it is still very good. For the price this is a good deal. These are center cutting mills. I will be using them in my Bridgeport and Kondia Bridgeport clone. Remember, no one ever said I have too many end mills.

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 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.

I wont know how durable these are until Ive worn one out. But I make some test cuts with them in a small mini mill (the common seig X2 that is sold by Micro Mark, Grizzly, and many others) on mild steel plate. They had no trouble making smooth clean slot cuts .030 deep x 5/16 wide in a single pass. They definitely cut with the sharpness and smoothness of carbide. Then I tried some facing, edge, and plunge cuts in the same mild steel, and got good clean results. It throws neat, uniform chips with no burning or chattering. How long will they last? Who can say. But they do a nice job as new.

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.

At this point, Ive really only tested the 3/16 bit. Material removes cleanly, chips consistently. The first few cuts with this bit have been clean and crisp. The bit shows no wear, but for carbide, it really hasnt been tested hard yet. Reasonable price point, based on the anticipated bit life. As time progresses, Ill report on durability...

They look very good

We’ll packaged and good quality

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.

This is for the Sisona carbide end milling bits. These really do a great job cutting thru steel, both mild and stainless. Does a great job on aluminum too. These 4 flute end mills will need their own collets, each bit has a different diameter, so youll need 5 collets. But if youre buying carbide end mills, chances are you already have the collets. I like that each end mill has their own labeled plastic box. Makes it easier to find on the drawer holding my end mills. These held their sharpness over the few cuts I made so far. Ill update this if anything changes.