SpeTool 1/8 End Mills for Aluminum 3 Flutes CNC Spiral Router Bits for Aluminum Cut Non-Ferrous Metal Upcut 1.5 inches Long 5 Pieces

FWIW, I used it in my CNC mill (sticking out 1 from the collet) with the following feeds/speeds and it cut perfectly: 3000 RPM 10.4 in/min feed .036 depth of cut .050 step over Climb cut

Cut aluminum. Worked good. Cant beat them for the price

These are great for my CNC milling machine and CNC router machining aluminum. Finish on my milling machine is superb, I run them around 4800RPM and at recommended feed (as per GWizard calculator for the width and depth I need) and have not broken one yet. On the router I run around 10k RPM and 25-50% of recommended feed rate, finish is not as good on side walls due to lack of machine rigidity, not broken one yet cutting 1/8 plate aluminum. Definitely will buy again, I have other larger SPE tungsten end mills and they all perform very well.

These bits are absolute junk. They break at the slightest side load when cutting aluminum. Might be good for foam or soft wood, but NOT cutting hardwood or aluminum. SAVE YOU MONEY!

Cut 1/8 6061 sheet with them. Cut nice and have lasted well.

Milled several inches of 1/4 deep slots in aluminum, worked very well and didnt break.

Well made end mills. Able to fine cut names in heart boxes for Christmas gifts.

I have been cutting 1/9”aluminum plate for a couple days . Tried these bits as it said aluminum so cuts worse than my other bits and running slower broke 2 bits in 10 min didn’t make it through first pass so I’m done these won’t work for me .

I just got started using my SainSmart desktop CNC but needed an Upcut End Mill for an aluminum project. These end mills have done a great job chipping away at my project. The construction of the desktop CNC is a bit lacking so I can only cut 0.005 in depth per pass. Ive run one of these end mills for 100hrs or so will no real change in cut quality. I did break one end mill when a part came lose during a cut but that was my own fault setting up my material improperly.

I am a avid hobby machinist and generally use these in my sherline mill. I have tried almost every brand of end mill and primarily use YG1 Alu-power and Gorilla mills, which are some of the best you can get. These 3 flute end mills are absolutely razor sharp and as you can see in the picture I cut my finger pulling it out! They cut like butter in steel or aluminum and for me personally the 3 flute is the best of both worlds as it cuts fast like a 2 flute with good chip evacuation but leaves a much better finish, with a ridgid mill you can expect almost mirror like finishes. One of the best parts is you get 5! 5 end mills for less than $30 and they are perfect, if you are looking for razor sharp and long lasting micro end mills then these are a no brainer and I personally bought 20 of them which will last me forever.