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

These bits are very sharp and durable.There is no visible wear and tear after long time of work.I am happy with it.

Tested the 5/8” cutter in hot rolled steel, was able to do a full width cut at 2mm depth with a feed rate of 480mm/m on my CNC converted HF mini mill. Surface finish was excellent given the rigidity (or relative absence!) and I was very pleased with the speeds I was able to achieve - quite aggressive for me but felt I should put the cutter through much more than I ordinarily would for the purposes of this review. These cutters are definitely on my must buy list. Ran it dry and did four faces on two 1/2” x 3/4” x 4” pieces. Photos show finish from roughing operation and the blue chips it produced with no sign of cutter deterioration after removing a total of 1/4” over a length of 16”!

Super hard and strong. Drilled through angle iron without any problems. Nice durable set.

I get it these are specialized tools. Not everyone has a milling machine. Well, I know someone that does and I have some parts that will need milling. Since I know I want him to do it as a friend, I figured this would be a nice trade. These are Tungsten Carbide and cobalt. We will be cutting a steel hitch that is 2.5” and needs to be milled to 2.0”. While we have not used them yet I am told that this is a good set and exactly what is needed to do the job. As far as price goes, I am no expert on these. I see prices for way less to way more. Once I see them cut the value will be in did they work as expected. When I have time to go over and he has time to mill, I will update my review. For now, not having much to go on except my friend the expert’s word I think this is a good set and recommend them.

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

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...

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.

We’ll packaged and good quality

These have been working well for a home gamer like me. I dont use them a lot, but have not had any problems and they do a great job.

I have been needing to elongate the slot on this bracket so figured would give these a try. I chucked one of them up and went to it. I was not slow or gentle on it ether. I only made two cuts and it loved it. No complaints from it at all and with no lube either. I wanted to see just how well it would do when rushed and did just fine. Kindof surprised for a no namer. I know that will need to run for much longer to determine its true lifespan but for the price I cannot complain. I have a budget and cannot always get the best out there and these fit the bill. Hope this helps and thanks..