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

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.

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

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

Perfect for the price

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 .

Poor quality

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!

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

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.

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