Accusize Industrial Tools 1'' Dia, M42 8% Cobalt Tialn Roughing End Mill, Coarse Tooth, 1'' Shk Dia, 2'' Flt Length, 4-1/2'' Oal, 5 Flute, 1102-0001

Cuts great

Great product for removing lots of material.

For starters, I am not a machinist and don't have a milling machine or any real mill experience. I needed to elongate some 3/8" bolt holes for in 1/4" thick steel hinge brackets for a wrought iron gate. Tried filing and using a Dremel grinding stone to no avail, or at least too slow progress for my patience. So I chucked this thing up in my drill press and along with a cross-slide vice created my poor mans milling machine. This tool went through that steel in no time and made clean slotted holes. I used regular drilling / tapping fluid and it was a little noisy, but I was careful to not cut too fast. In maybe 5 minutes per hole and they were now clean 3/8" x 3/4" slots and perfect for getting the gates aligned again. When finished the tool still looked and felt brand new.

I'm so used to carbide tooling that I didn't realize this cutter wasn't a carbide cutter until I looked up my past orders. I've used this in steel, aluminum, and some plastics. Seems to cut everything like butter and I've had no problems with anything getting gummed up in the flutes. It leaves a fairly smooth surface. The groves from one flute don't align to the same groove in the next flute, so you wind up with a smoother surface than you might expect. Will definitely buy more - these cost less than half of a good quality carbide cutter in the same size. Notice I said good quality. I've had some carbide endmills, bought here on Amazon, that were pretty awful.

I only cut annealed tool steel and these absolutely rip through it unlike any other end mill in my box. Not only that, but I’m getting better longevity out of there than my carbide. I have cut tool steel for 2 days straight with one of these and it’s still going no problem. I’m stocking up because these are all I use now. For the price, they can’t be beat. The toughness and impact resistance and resistance to damage from vibration with m42 is so much better than carbide, carbide almost he no place in my my box anymore. One bad vibration and carbide is smoked. These can take anything you throw at them.

The media could not be loaded.  So I’m making some prototypes in Aluminum. I use routers and make patten jigs in order to guide me. The trick that I have found is to use slower speeds, use a slower feed rate, and never try to take off too much. Example: With this 1/2” (.500”) bit, I find it useful to divide my bit diameter by 4 for material cutting... For this .500 (1/2”) bit divided by 4 =.125 (1/8”) . So I start from there with 1/8” deep and 1/8” material cut. Works great!I post videos on other bits, I’ve also tried.

We just got our bit in today and don't get me wrong I consider my self kind of green. But with my Grizzly Mill and lathe combo that I have in my shop and going through to date only a few sets of bits, I am say I am loving this, very aggressive cutter that for me at this time, very impressed.

This end mill is hungry. Leaves a good finish on the face and a decent enough finish on the side for a quick clean up

It seemed kinda pricey considering I'm used to buying the cheap endmill kits, but it's well worth it. It cuts amazing. I use it a lot.

OMG! I did not expect this little end mill to hog out metal like that. Sure the finish isn't prefect, but good enough for what I was doing. And it lasted longer than I expected. I bought extras and I didn't need them. Just one end mill lasted the whole job.

pour travailler le metal

It's really good at making chips. Cuts aluminum like butter. Edge retention is phenomenal. Highly recommended.

durable bit for milling thick mild steel, keeps a sharp edge.