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

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.

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

It works great on acrylics. But not aluminum. It broken after I used it on aluminum.

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

Best for the money can’t lose on this i will buy again

Im pretty happy with these cutters. They held up well on softer alloys with lubrication, and were able to get through hardened alloys with some finessing of the toolpath. Overall, they got jobs done and I ended up with a nice finish. Pretty good for the money, especially since Im an occasional user and dont need to invest heavily in my hobby tools.

Perfect for the price

Poor quality

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.

I’ve been hogging out aluminum on my Sainsmart Genmitsu 3020 for months now and I’ve never broken a single endmill. Solid product.