SPEED TIGERMicrograin Carbide Square End Mill - 2 Flute - ISE3/16 2T (5 Pieces, 3/16") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals

There bits were ordered to solve a routing cut problem I had. First, some background - I have 2 CNC Routers. One is home built from a kit and the other is from a US based manufacturer. I use Vectric's CUT2D software to generate G-Code. One of my projects had relatively small letters using a "stencil" font so there were no un-supported letter parts. I tried using a V-Bit but as it went deeper, the letter sides would become too thin and fall apart. The smallest end mill I had before buying these was 1/8" inch. My letters were so small on a 2" x 4" field that a 1/8" mill could not cut all the slender parts and I was left with gaps in the letters.I ordered these 1/16" bits in an attempt to pocket cut the letters and retain the delicate lines. They worked spectacularly! I first used my smaller CNC to test cut a block of pine wood. The bits made clean, sharp cuts with almost no after routing work needed in the corners or the top edges. For the main cut, I used my larger machine and cut the letters in 1/8" thick polystyrene plastic. The end result was perfect. Clean cuts all the way through and no melted edges. The 2 flute design allows chips to fly away via the vacuum device is use to keep the material clean. The bits cut cleanly and without any heating to melt the plastic base.So far, I have cut polystyrene, MDF, and pine wood with no clogging or poor edges. I will look to this supplier for additional bits in the future.

I needed to cut some cold-rolled steel on my desktop CNC. Typically steel is not a material you want to cut on a desktop CNC which tend not to be as rigid as necessary. But with some well-thought out feeds and speeds it is possible. I bought the 2 Flute - ISE1/8"2T set of end mills. And I'm very impressed. I ran the machine at 15k rpm, .5mm DOC, and 150mm feed rate. The end mill was outstanding. It didn't chatter, it cut smooth as butter and the finishing pass left a very nice finish on the edge of the cuts. You know what else, the packaging the end mills came in was very nice too. I know that isn't important but most manufactures don't even think about packaging. To give some perspective I use mostly Spektra end mills from Amana Tools, and Whiteside end mills, both for wood. These Speed Tiger end mills were my first introduction to cutting steel.

I had some work to do on some AL (7075-T6) with a Harbor Freight Mini Mill and it worked fine. It had some chatter but some is to be expected with 2-flute cutters anyway. I had to hog out a pocket that was 1.25" deep and down toward the bottom of the pocket the chatter got a little worse but nothing horrible. Again, this is to be expected with this style of cutter. I kept the vacuum going to keep the cutter from cutting through its own chips as much as possible and that helped. The finish was good enough for my needs but I have a 4-flute end mill so I took off another .001" just to smooth the finish even further but again, it wasn't really needed.

Bought these on a recommendation. Used to mill 404 stainless steel. Wound up using only one bit to mill 6 pieces and bit was still in perfect shape. Destroyed 3 other mills trying to finish job. Had to order new bits and purchased these on an online reccommendation. Company stated to use their suggested speed and feed over normal specs. Followed their instructions and used sewing machine oil for lubricant. Results were excellent surface finish and bit longevity was phenomenal. Speed Tiger Carbide ISE Mills performed beyond expectations and will be my "go to" mills for future needs.

I used and abused this bit to cut out and mill two AR lowers on my drill press. It started to dull on the end of the Second one. However, I truly abused it cutting the aluminum out and it performed extremely well. Remember that you have to turn the speed up on your drill press for it to function with these bits properly.It still cuts, just a little dulled by the amount of use. Much material is removed to complete the 80% lower receivers.I would recommend it and will certainly buy more for future builds.I had no issues with it breaking, luckily since I only had the one. Also the length is great for the job I did.

The product did what I bought it for, mill a 3/16 slot 1/8 deep in 6061 Aluminum.Their support team was especially helpful in getting me the correct speeds and feeds.

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I would give them a 5 star because they are good cutters but I have to leave 3 stars because the description says 1/4" shank but the ones I received are 1/8" shank. I have collets to fit them but it is a little annoying...