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EZ-P
2025-09-04 11:14:04
I kept killing drill bits trying to drill out a bolt to get an extractor in it and remove it from a LS engine head. (Exhaust manifold bolt) This drill bit cut it like butter and I can't recommend it enough!
Oldshoes
2025-06-29 10:12:28
Nice mills for AlUMinum. I can't spin them as fast as they should be spun, for aluminum, in my mill. They still left a pretty good finish at 3300 rpm - my top speed. Marketing says these can be used for just everything including the kitchen sink - and they would probably tell you - you can cut diamonds with them too - if it would get your nickle. I don't believe it. I'll just be using these for Auminum. I haven't tried anything else - not going to - So, I'll just call these 4 Stars.
Happy Shopper
2025-06-12 11:18:11
Review for the 3/16" Titanium Coated Carbide Square Nose 4 Flute End MillI examined this set of five end mills under a microscope. As shown in the photos, the edges are clean and finely ground, indicating good quality.I will update this review if anything changes after further use to comment on whether the end mills dull quickly or if the carbide chips or shatters easily.One item I don't like is the lack of information on Surface Feet per Minute (SFM), RPM, and Inches Per Minute (IPM) for various materials. For smaller end mills like these, it is critical to get the RPM and feed rate right to prevent dulling or breaking the end mill. Providing this information would be very helpful for optimizing chip load and cutting parameters, ensuring the tool operates at peak efficiency. Coolant, or cutting fluid is also very helpful.In the meantime, you can refer to typical guidelines for chip load, RPM, IPM, and other parameters for carbide end mills available online.Overall, these end mills are well worth the money.
G. Scott
2025-06-04 11:59:27
Doesn't cut well
Wookieecantina
2025-05-10 17:29:35
I'm very pleased with these very small cutting tools. They're precision ground and really cut through material without an issue.Because of their size, I used a great deal of cutting fluid/coolant and I never push the bits too hard or too fast.You. must let these work at the speed they're designed and don't get in a hurry. Bits this small are easy to snap off if you get in a hurry, but if you're a machinist, you already know this probably through first hand experience, just like myself.I've experienced no issues with these bits and for the price, they're honestly impossible to complain or raise an issue with/about.Be patient, use cooland/cutting fluid, keep the cut flooded and running at a slow progression and watch for potential build up if cutting aluminum as these quite fine.I have no doubt you'll be very pleased with these cutting bits, just remember, don't hurry or push them harder/faster than they're designed to run at.I'll be ordering more as needed.
Jared Bankston
2025-04-13 17:58:45
I used this bit to try and cut through a razor blade and broke in seconds
twofouroh
2025-01-31 10:41:04
I needed to do a little slotting on some mild steel, and these were the right size. They look good out of the box, all of them are sharp and the coating is uniform. I took it easy, and the mill doesn't show any wear after finishing the job. They probably won't last as long as a name brand, but they are off to a really good start. The cost difference alone is enough to give them a try.I like them!
E.C.
2025-01-27 14:18:07
My brother put these to the test using his manual mill, so could not give an exact speed - but after a facing operation and a full depth plunge cut on an angled surface on 4350 steel alloy, one tooth was slightly chipped. There was some deflection and some chatter when going slow, but he says that's probably his machine not the end mill. It 'ate right through' the metal, and on the facing operation, it 'chewed through the scale like butter'. Overall, he's very pleased with these end mills and will be using them in his shop regularly.
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